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How have ancient and modern historians evaluated Alexander the Great, and how do the problems of the surviving evidence shape that debate?

The ancient and modern evaluation of Alexander the Great: the problem of evidence that no contemporary narrative survives and that every surviving account descends from later writers using lost sources (Arrian from Ptolemy and Aristobulus; the vulgate from Cleitarchus; the propaganda of Callisthenes and the hostile Peripatetic tradition); the ancient images of the invincible hero against the drunken tyrant; the modern debate between the romantic idealising tradition of W.W. Tarn's chivalrous visionary with a dream of the 'unity of mankind' and the revisionist tradition of Ernst Badian and Brian Bosworth's ruthless, paranoid autocrat; the more recent balanced and reception scholarship; and the assessment of his achievement and legacy

A focused answer to the HSC Ancient History dot point on evaluating Alexander the Great - why no contemporary narrative survives, how Arrian, the Cleitarchan vulgate, Callisthenes' propaganda and the hostile Peripatetic tradition shape the record, and the modern clash between Tarn's visionary and the ruthless autocrat of Badian and Bosworth.

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What this dot point is asking

NESA's evaluation and interpretations strand for Alexander is the historiography capstone of the personality. It does not ask you to narrate his conquests again; it asks HOW we know what we think we know, and how that knowledge has been fought over. The distinctive fact here is stark: no contemporary narrative history of Alexander survives. Everything we read was written three to five centuries after his death in 323 BC, by writers stitching together now-lost accounts of very mixed reliability. You need to explain that source problem (Arrian working from Ptolemy and Aristobulus; the "vulgate" descending from Cleitarchus; the court propaganda of Callisthenes; the hostile Peripatetic tradition), weigh the ancient images of the invincible hero against the drunken tyrant, and then trace the modern debate between the romantic idealist of W.W. Tarn and the ruthless autocrat of Ernst Badian and Brian Bosworth, before reaching a judgement about his achievement and legacy. Throughout, the "problem of evidence" is the point, not a footnote.

The answer

The central problem: no contemporary narrative survives

The single most important fact about evaluating Alexander is that not one contemporary narrative of his reign survives. The five main accounts we have were all written long after the events: Diodorus Siculus (Book 17, c. 60 to 30 BC), Quintus Curtius Rufus (first century AD), Plutarch's Life of Alexander (c. AD 100 to 120), Arrian's Anabasis of Alexander (c. AD 130 to 150), and Justin's epitome of the lost history of Pompeius Trogus (second or third century AD). Between Alexander's death in 323 BC and even the earliest of these lies roughly three centuries; between it and Arrian, our best source, lies about 450 years.

These later writers were not eyewitnesses. They compiled their narratives from a lost first generation of contemporary accounts - and the character of those lost sources, more than anything else, determines the Alexander we get. This is why the topic is a "problem of evidence" in the technical sense: we are always reading Alexander at second or third hand, through writers who chose, trusted and combined the lost originals differently.

The source-stemma: two branches from lost originals

Historians sort the surviving accounts into two broad traditions, each drawing on different lost sources.

The first is the "good" tradition, represented by Arrian. In his preface Arrian states that he follows Ptolemy son of Lagus and Aristobulus above all, because both marched with Alexander and because Ptolemy, having become King Ptolemy I of Egypt, would have found lying especially shameful. Ptolemy's lost memoir was probably strong on military detail; Aristobulus, an engineer on the campaign, wrote late in life. This branch gives the soberer, more favourable Alexander - though it is not neutral, since Ptolemy had every reason to magnify Alexander's legitimacy and his own part in events.

The second is the "vulgate" tradition (Diodorus, Curtius, Justin, and much of Plutarch's colour), which descends largely from Cleitarchus, a lost writer of the late fourth or early third century BC who probably worked at Alexandria and produced a dramatic, rhetorical and popular history. The vulgate is rich in vivid incident and moralising set-pieces, but Cleitarchus was not a campaign eyewitness, so it is treated as lively but unreliable on detail.

Over the top of both branches lie two shaping forces. Callisthenes of Olynthus, Aristotle's great-nephew and Alexander's official court historian, produced contemporary PROPAGANDA - the Achilles-like heroic image and the divine-sonship theme (the visit to the oracle of Ammon at Siwah, 331 BC). After Alexander executed Callisthenes in 327 BC, the Peripatetic school of Aristotle turned hostile and developed the counter-image of a fine king corrupted by Fortune, drink and Persian luxury. The favourable and hostile strands both feed, unevenly, into the surviving five.

How the lost sources feed the surviving accounts of Alexander A provenance stemma. A top row of lost contemporary sources - Callisthenes' court propaganda, the eyewitness memoirs of Ptolemy and Aristobulus, and the sensational history of Cleitarchus - feed downward into two surviving branches. The eyewitness memoirs feed Arrian's Anabasis, the sober "good" tradition, c. AD 130 to 150. Cleitarchus feeds the "vulgate" - Diodorus 17, Curtius and Justin, plus the colour in Plutarch - c. 60 BC to AD 100. A hostile Peripatetic overlay, formed after Callisthenes' execution in 327 BC, colours both with the "corrupted tyrant" image. A note warns there is no surviving contemporary narrative. No contemporary narrative survives every account below reaches us through LOST originals LOST contemporary sources (4th to 3rd c. BC) Callisthenes court PROPAGANDA hero, divine son Ptolemy and Aristobulus eyewitness memoirs Cleitarchus sensational, popular not an eyewitness SURVIVING accounts (1st c. BC to 2nd c. AD) Arrian the "good" tradition Anabasis, c. AD 130-150 soberest, most reliable The "vulgate" Diodorus 17, Curtius, Justin (Plutarch's colour) vivid but unreliable Hostile PERIPATETIC overlay (after 327 BC) the "good king corrupted by Fortune and luxury" image, colouring both branches The favourable strand runs through Callisthenes and the eyewitnesses; the hostile strand hardens in the Peripatetics and moralising vulgate. Which lost source a writer trusts decides whether we meet the invincible hero or the drunken tyrant.

The ancient images: invincible hero against drunken tyrant

Out of these strands the ancient world built two competing images. The first is the invincible hero: Alexander as a new Achilles and son of Zeus-Ammon, the unbeaten conqueror of Granicus (334 BC), Issus (333 BC) and Gaugamela (331 BC). This image was cultivated in his lifetime by Callisthenes, who publicised the divine sonship confirmed at Siwah in 331 BC, and it underpins the heroic Alexander of legend and the later Alexander Romance.

The second is the drunken tyrant: a fine king corrupted by success, wine and Persian luxury. Its defining episodes are the burning of Persepolis (330 BC), the executions of Philotas and then Parmenion (330 BC), the murder of his officer Cleitus the Black at a drunken banquet at Maracanda (328 BC), and the execution of Callisthenes himself (327 BC). This image belongs above all to the hostile Peripatetic tradition and the moralising vulgate, which read Alexander's later reign as a tragic decline. The two images are not simply "true" and "false"; they are the residue of opposed strands of a lost, biased source-base.

The great modern debate: Tarn's visionary against the revisionist autocrat

Modern historiography splits along a line that mirrors the ancient one. The romantic, idealising tradition reached its height with Sir William (W.W.) Tarn, whose Alexander the Great (1948) presented a chivalrous, high-minded Alexander whose deepest aim was the "unity of mankind" - a brotherhood in which Greeks and Persians would be partners. Tarn built this largely on the prayer for concord at the Opis banquet (324 BC) and on Plutarch's rhetorical essay On the Fortune or Virtue of Alexander, and he tended to explain away the darker episodes. Robin Lane Fox's Alexander the Great (1973) revived a sympathetic, heroic Alexander for a later generation.

Against this stands the revisionist tradition. Ernst Badian, in a series of studies from the late 1950s - above all "Alexander the Great and the Unity of Mankind" (Historia, 1958) - demolished Tarn's brotherhood thesis as anachronism: the Opis prayer concerned Macedonians and Persians specifically, not all humanity, and Tarn had read modern ideals back into a fourth-century BC autocrat. Badian's Alexander is instead an increasingly isolated and paranoid ruler who eliminated rivals in a climate of fear ("the loneliness of power"). A.B. (Brian) Bosworth carried this forward in Conquest and Empire: The Reign of Alexander the Great (1988) and Alexander and the East: The Tragedy of Triumph (1996), foregrounding the massacres and human cost that the romantic image suppresses. On this reading the celebrated "fusion" of peoples was a pragmatic instrument for controlling a conquered empire, not an idealist's dream.

Modern interpretations of Alexander, from visionary to construct A vertical timeline of modern historians. W.W. Tarn, 1948, the romantic visionary with a "unity of mankind." Ernst Badian, 1958 to 1964, revisionist, demolishes the unity thesis and portrays a paranoid autocrat. Robin Lane Fox, 1973, a romantic, sympathetic revival. A.B. Bosworth, 1988, Conquest and Empire, stresses brutality and the human cost. Pierre Briant and the reception turn, from 2002, read Alexander from the Achaemenid side and as a cultural myth remade by each age. Visionary, autocrat, myth: judging Alexander Tarn, 1948 Romantic visionary; a dream of the "unity of mankind" Badian, 1958 to 1964 Revisionist: demolishes the unity thesis; a paranoid autocrat Lane Fox, 1973 Romantic revival; sympathetic, heroic Alexander Bosworth, 1988 Conquest and Empire: brutality and the human cost of conquest Briant / reception, from 2002 Achaemenid viewpoint; Alexander as a myth remade by each age Each reading leans on how far it trusts the favourable, propaganda-fed strand.

The recent turn: balance, reception and the Achaemenid Alexander

The most recent scholarship reframes the "hero or tyrant" question rather than simply choosing a side. Pierre Briant, the leading historian of the Achaemenid Persian empire, reads Alexander from the Persian side, treating him in large part as the last of the Persian Great Kings and shifting the focus from Macedonian glory to the continuities of the empire he seized. Paul Cartledge (Alexander the Great: The Hunt for a New Past, 2004) offers a deliberately balanced modern biography. And the "Alexander in reception" turn - work such as Diana Spencer's The Roman Alexander (2002) - studies how every age, from Rome to the medieval Alexander Romance to modern cinema, has remade Alexander in its own image, so that "the visionary" and "the tyrant" are themselves cultural constructs as much as historical findings.

Assessing the achievement and legacy

Whatever one's verdict on his character, Alexander's impact is not in doubt. His conquests destroyed the Achaemenid empire and created the framework of the Hellenistic world: the successor kingdoms of his generals (Ptolemaic Egypt, the Seleucid realm, Antigonid Macedon), the spread of the Greek koine and of Greek civic culture across the Near East, and the network of city foundations, of which Alexandria in Egypt became the greatest. The "fusion" question - whether the Susa weddings (324 BC), the Persian epigonoi and the adoption of aspects of Persian court practice reflect a genuine ideal of racial and cultural partnership (Tarn) or a pragmatic policy of imperial control (Badian, Bosworth) - remains the sharpest single test of the idealist-versus-autocrat debate, and it cannot be settled without confronting the problem of evidence that dominates every part of this topic.

How to read a source on this topic

Section III sources on Alexander's evaluation typically quote (in owned, reconstructed form) an Arrian passage, a vulgate anecdote, a fragment of propaganda, or a modern historian. Three reading habits matter most here.

First, fix the DATE, STRAND and STANCE of the source before you use it. Ask which lost source it descends from: is it the sober "good" tradition (Arrian, from Ptolemy and Aristobulus), the sensational vulgate (Cleitarchus), the favourable court propaganda (Callisthenes) or the hostile Peripatetic moralising? That classification usually decides how far you can trust it, and none of the ancient writers is contemporary.

Second, separate a source's USEFULNESS from its RELIABILITY. A vulgate anecdote about Alexander's drunken cruelty is unreliable as a verbatim record, yet very useful as evidence of the hostile tradition and of genuine tensions in the army over his orientalism. Callisthenes' divine-sonship material is unreliable as fact yet invaluable as evidence of the image Alexander wished to project.

Third, when a source quotes a modern historian, place them on the spectrum (Tarn's or Lane Fox's romantic Alexander; Badian's and Bosworth's revisionist autocrat; the reception and Achaemenid reframing) before you deploy them, so you use their position to build an argument rather than as decoration.

Practice questions

Original practice questions graded from foundation to exam level, each with a full worked solution. Try them before revealing the solution.

foundation4 marksSource A: an ExamExplained reconstruction, in the manner of Arrian's preface, of how he explains his choice of sources: "I have followed Ptolemy son of Lagus and Aristobulus above all others, for both marched with Alexander; and since Ptolemy was himself a king, for him to have lied would have been the more shameful." Using Source A and your own knowledge, outline what this evidence suggests about how Arrian selected his sources.
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A 4-mark "outline" needs Arrian's principle and its limits.

1 mark: identifies that Arrian preferred eyewitnesses - Ptolemy and Aristobulus both "marched with Alexander," so he privileges companions of the campaign over later writers.
1 mark: identifies his second criterion, that a king (Ptolemy, later Ptolemy I of Egypt) had more to lose by lying, so Arrian trusts his rank as a guarantee of truth.
1 mark: places this correctly - Arrian wrote his Anabasis of Alexander around AD 130 to 150, roughly 450 years after the events, and had NO contemporary narrative of his own to use; he depended entirely on these now-lost accounts.
1 mark: notes the limitation - Ptolemy was a rival successor with reason to magnify his own role and Alexander's legitimacy, so "a king would not lie" is a weak guarantee, and modern historians treat even Arrian's "good" tradition critically.

Marker's note: full marks require BOTH Arrian's stated criteria (eyewitness plus royal rank) and a limitation; a response that only paraphrases the source without the ~450-year gap or Ptolemy's bias caps at 2 marks.

foundation3 marksOutline why the surviving evidence for Alexander the Great is described as a 'problem of evidence.'
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A 3-mark "outline" needs the core problem and its consequence.

1 mark: no contemporary narrative history of Alexander survives; every extant account (Arrian, Diodorus, Curtius, Plutarch, Justin) was written roughly 300 to 500 years after his death in 323 BC.
1 mark: all of them depend on now-LOST contemporary sources of very mixed reliability - the eyewitness memoirs of Ptolemy and Aristobulus, the sensational popular history of Cleitarchus, and the propaganda of Alexander's court historian Callisthenes.
1 mark: because our surviving writers select and combine these lost sources differently, the "facts" reach us already filtered through layers of bias, flattery and hostility, so the evaluator must reconstruct Alexander from second-hand, contradictory traditions.

Marker's note: rewards the no-contemporary-narrative point AND the lost-sources point; simply saying "the sources are late" without the lost-source layer earns 1 mark.

foundation3 marksOutline what the 'vulgate' tradition is and why it must be used with caution.
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A 3-mark "outline" needs what the vulgate is, its origin, and the caution.

1 mark: the "vulgate" is the common tradition shared by Diodorus Siculus (Book 17), Quintus Curtius Rufus, Justin's epitome of Pompeius Trogus, and parts of Plutarch's Life of Alexander.
1 mark: it descends largely from Cleitarchus, a lost writer of the late fourth or early third century BC, probably working at Alexandria, who wrote a colourful, dramatic and popular history rather than a sober one.
1 mark: it must be used with caution because Cleitarchus was NOT a campaign eyewitness and favoured sensational, moralising and rhetorical effect, so the vulgate is rich in vivid detail but unreliable on specifics; it is usually weighed against the more sober Arrian.

Marker's note: rewards naming the vulgate authors AND their descent from Cleitarchus; "the vulgate is unreliable" without the Cleitarchus origin caps at 1 mark.

core6 marksSource B: an ExamExplained reconstruction of the kind of moralising anecdote preserved in the hostile tradition: "As the wine went round at Maracanda, Cleitus, who had saved the king's life at the Granicus, reproached him for aping Persian ways and forgetting his father Philip. Alexander, maddened by drink and flattery, seized a spear and ran him through, then wept for days at what his fortune and his luxury had made of him." Using Source B and your own knowledge, explain how this source reflects the hostile ancient tradition and its perspective.
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A 6-mark "explain" needs the content, how it builds the hostile image, and the source's perspective and limitation.

1-2 marks: content - the passage shows Alexander, drunk at a banquet, murdering his loyal officer Cleitus the Black (an event placed at Maracanda in 328 BC) and then collapsing in remorse, cast as a man ruined by drink and success.

2 marks: how it builds the tradition - this is the "drunken tyrant" image that runs against the heroic one. After Alexander executed his court historian Callisthenes in 327 BC, the Peripatetic school of Aristotle turned hostile and portrayed him as a good king corrupted by Fortune (Tyche) and oriental luxury; the reconstruction's stress on "Persian ways," drink and moral collapse is exactly that Peripatetic and vulgate pattern of tragic decline.

2 marks: perspective and limitation - the anecdote is moralising, not neutral reporting; it is shaped to teach a lesson about power and excess, survives only in much later writers (Plutarch, Curtius, Arrian all record the killing but differ on detail), and personalises deep political tensions - the resentment of Macedonians at Alexander's orientalism - into a single lurid scene. It is useful evidence of the hostile tradition and of real army discontent, but unreliable as a verbatim account.

Marker's note: top responses identify the specific Peripatetic and vulgate "corrupted-by-success" frame and note the source is late and moralising, rather than treating the Cleitus scene as a straightforward factual record.

core5 marksExplain why W.W. Tarn's 'unity of mankind' thesis has been rejected by most modern historians.
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A 5-mark "explain" needs Tarn's thesis, its evidential basis, and the revisionist critique.

1 mark: Sir William Tarn (Alexander the Great, 1948) argued that Alexander was a high-minded visionary who dreamed of the "unity of mankind" - a brotherhood in which Greeks and "barbarians" would live as partners - making him a philosopher-idealist ahead of his age.

2 marks: Tarn built this largely on the prayer at the Opis banquet of 324 BC (a plea for concord, homonoia, between Macedonians and Persians) and on Plutarch's rhetorical essay On the Fortune or Virtue of Alexander, reading into them a universal ideal.

2 marks: Ernst Badian, in "Alexander the Great and the Unity of Mankind" (Historia, 1958), demolished this as anachronism: the Opis prayer concerned Macedonians and Persians specifically, not all humanity, and Tarn had read modern (Stoic and even twentieth-century) ideals back into a fourth-century BC king whose measures were pragmatic tools of control. Later scholars such as A.B. Bosworth reinforced this - the "fusion" served empire, not brotherhood.

Marker's note: rewards Tarn's thesis AND Badian's specific charge of anachronism resting on the misread Opis prayer, not just "historians disagree with Tarn."

core6 marksExplain the ancient images of Alexander as the invincible hero and as the drunken tyrant.
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A 6-mark "explain" needs both images, their sources, and why they coexist.

2 marks: the invincible hero - Alexander as a new Achilles and son of Zeus-Ammon. This image was cultivated in his lifetime by his court historian Callisthenes, who publicised the visit to the oracle of Ammon at Siwah (331 BC) and the divine-sonship theme, and it is sustained by the run of unbroken victories (Granicus 334, Issus 333, Gaugamela 331 BC) that made "invincibility" central to his propaganda.

2 marks: the drunken tyrant - Alexander as a king corrupted by success, drink and Persian luxury: the murder of Cleitus (328 BC), the burning of Persepolis (330 BC), the execution of Parmenion and Philotas (330 BC) and of Callisthenes (327 BC). This image is strongest in the hostile Peripatetic tradition and the moralising vulgate.

2 marks: why they coexist - the two images derive from opposed strands of a lost source-base (favourable court propaganda versus hostile later moralising), and our surviving writers blend them unevenly, so the same career yields a hero to one tradition and a tyrant to the other.

Marker's note: rewards BOTH images tied to named episodes and sources, plus the point that they stem from different strands of the evidence rather than being simple fact.

exam10 marksSource C: an ExamExplained reconstruction of the idealising modern reading associated with W.W. Tarn: "Alexander was no mere conqueror. He was the first man to dream of one world, in which Greek and Persian, victor and vanquished, would be partners in a single brotherhood of mankind; and he laboured, against the prejudice of his own people, to make that dream real." Using Source C and your own knowledge, evaluate the usefulness of the romantic idealising tradition as a guide to the historical Alexander.
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A 10-mark response should use the source, add own knowledge, and reach a judgement on usefulness and its limits.

Use the source
Source C captures the romantic reading crystallised by W.W. Tarn (1948): Alexander as an idealist with a "brotherhood of mankind," struggling against Macedonian prejudice. It rests on the Opis prayer (324 BC) and Plutarch's On the Fortune or Virtue of Alexander.
Corroborating own knowledge
The tradition is useful in three ways. It rightly highlights real, striking measures: the Susa weddings of 324 BC (Alexander and his officers marrying Persian noblewomen), the training of 30,000 Persian "successors" (epigonoi), the appointment of Persians to office, and the adoption of elements of Persian dress and court ceremony. It captures the genuine scale of Alexander's ambition and the way he broke down the rigid Greek-barbarian divide in practice. And, as an influential interpretation in its own right, it is essential to understanding twentieth-century historiography and the "Alexander in reception" question - how each age remade Alexander in its own image.
Limitations
But as a guide to the historical Alexander it is now largely rejected. Ernst Badian (Historia, 1958) showed the "unity of mankind" is anachronism: the Opis prayer sought concord between Macedonians and Persians, not universal brotherhood, and Tarn read modern ideals into a fourth-century BC autocrat. The "fusion" measures look pragmatic once the evidence problem is faced - they secured a vast conquered empire by co-opting its elite, not from idealism. A.B. Bosworth (Conquest and Empire, 1988) stresses the brutality that the romantic image suppresses (massacres, the sack of Thebes in 335 BC, the executions of Parmenion, Philotas and Callisthenes). Tarn also leaned on Plutarch's rhetorical essay, which is epideictic praise, not history.
Judgement
The romantic tradition is useful for recovering the ambition and cross-cultural reach of Alexander's policy, and indispensable for the historiography and reception debate, but unreliable as a portrait of his motives: its central "brotherhood" thesis is a modern idealisation read back into the sources, and the ruthless, pragmatic autocrat of the revisionists fits the evidence better.

Marker's note: Band 6 responses separate "useful for ambition, fusion measures and reception history" from "unreliable on motive," name Tarn AND a critic (Badian or Bosworth), and cite dated evidence (Opis and Susa 324 BC) rather than either endorsing or dismissing the romantic image wholesale.

exam25 marksESSAY. Evaluate the view that Alexander the Great was a visionary idealist rather than a ruthless autocrat, with reference to ancient and modern interpretations and the problems of evidence.
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A Band 6 essay sustains a judgement on the "idealist versus autocrat" question, uses named dated evidence, and weaves ancient AND modern historiography around the problem of evidence. Plan plus model paragraph.

Thesis
The evidence supports the ruthless and pragmatic autocrat far more than the visionary idealist, but any confident verdict must reckon with the fact that no contemporary narrative survives and that "visionary" and "tyrant" are largely artefacts of which lost source-strand a later writer preferred.
Argument line 1: the case for the idealist
The romantic reading (W.W. Tarn, 1948) points to genuine measures - the Opis prayer for concord (324 BC), the Susa weddings (324 BC), the enrolment of Persian epigonoi, and the integration of Persians into army and administration - and to the vast civilising legacy: the Hellenistic world, the spread of koine Greek, and the city foundations (Alexandria in Egypt above all). This tradition draws on the favourable strand descending from Callisthenes' court propaganda and on Plutarch's On the Fortune or Virtue of Alexander.
Argument line 2: the case for the autocrat
Against this, the revisionists (Ernst Badian; A.B. Bosworth, Conquest and Empire, 1988) stress a reign of terror and calculation: the destruction of Thebes (335 BC), the burning of Persepolis (330 BC), the executions of Philotas and Parmenion (330 BC) and Callisthenes (327 BC), the drunken murder of Cleitus (328 BC), and mass killings on the eastern campaign. On this reading the "fusion" served control of a conquered empire, not brotherhood, and Badian (Historia, 1958) exposed the "unity of mankind" as anachronism.
Argument line 3: the problem of evidence
The verdict depends on whose lost source one trusts. Arrian (c. AD 130-150) follows the companions Ptolemy and Aristobulus and gives the soberer, more favourable Alexander; the vulgate (Diodorus, Curtius, Justin) follows the sensational Cleitarchus; the hostile Peripatetic tradition, after Callisthenes' death, fixed the "corrupted by fortune" image. There is no neutral contemporary assessment, so "idealist" and "tyrant" are partly products of the record.
Argument line 4: the recent reframing
More recent scholarship reframes the question: Pierre Briant reads Alexander from the Achaemenid side as, in large part, the last of the Persian Great Kings; Paul Cartledge (2004) and the "Alexander in reception" turn (e.g. Diana Spencer, The Roman Alexander, 2002) argue that each age has remade Alexander, so the "visionary" is itself a cultural myth.
Model paragraph (line 3, the evidence problem)
The sharpest fact about the Alexander debate is that we possess no word of a contemporary narrative. Every surviving history was written three to five centuries later and reaches us through lost intermediaries: Arrian openly builds his Anabasis on Ptolemy and Aristobulus and trusts Ptolemy because "a king would not lie," while the vivid vulgate descends from Cleitarchus, who never marched with the army. The heroic image was seeded by Alexander's own publicist, Callisthenes, and the tyrant image hardened in the Peripatetic school that Callisthenes' execution had turned hostile. As Badian and Bosworth insist, historians facing this lopsided, second-hand record have tended to reproduce one strand or the other, so the "idealist versus autocrat" question is inseparable from a question about the sources.
Conclusion
Alexander is best judged a supremely capable and ruthless autocrat whose conquests reshaped the ancient world, not the idealist of Tarn's brotherhood; but the evidence problem means every verdict rests on a record dominated by his own propaganda and hostile hindsight in equal measure.

Marker's note: Band 6 answers name historians across the divide (Tarn for the idealist; Badian and Bosworth for the autocrat; Briant, Cartledge or the reception turn reframing), deploy dated evidence (Persepolis 330 BC, Cleitus 328 BC, Opis and Susa 324 BC), and treat the problem of evidence explicitly rather than as background.

ExamExplained