The Cosmological Argument - TCE Philosophy (Tasmania)
“The cosmological argument and competing accounts of the origin of the universe”
The cosmological argument reasons from the mere existence of the universe to a first cause or necessary being, usually identified with God. Thomas Aquinas argued that the chain of causes cannot regress infinitely, so there must be an uncaused first cause; later versions argue that contingent things require a necessary being to explain why anything exists at all. The Big Bang offers a rival scientific account of the universe's origin. You are asked to explain the argument, relate it to cosmology, and evaluate the objections.
What this dot point is asking
This dot point belongs to Unit 4.2 of the TASC Philosophy course, Life, the Universe and Everything, which examines competing theories for the origin of the universe and arguments concerning the existence of God. The cosmological argument is one of the oldest and most discussed of these, asking why there is something rather than nothing.
Aquinas and the first cause
Thomas Aquinas presented several of his Five Ways as cosmological arguments. The argument from efficient causation observes that everything we encounter is caused by something else. But the series of causes, Aquinas held, cannot stretch back infinitely, for then there would be no first cause and so no later causes at all, which is absurd since causes clearly exist. Therefore there must be a first, uncaused cause, which Aquinas identifies with God. A parallel argument from motion reasons that every change is brought about by something already in motion, requiring an unmoved mover to start the whole process.
Any argument that infers the existence of God, or a first cause or necessary being, from the existence of the universe and the fact that its existence and the causes within it call for an explanation.
The argument from contingency
A subtler version reasons from contingency. Contingent things are those that exist but might not have; they depend on something else for their existence. If everything were contingent, the existence of the whole collection would remain unexplained, since each member only passes the question along. To explain why anything exists at all, there must be a necessary being, one whose existence is not dependent on anything else, and this is taken to be God. This form does not depend on whether the universe had a beginning in time; it asks instead what grounds the existence of a universe that need not have existed.
The first-cause version argues there cannot be an infinite regress of causes, so something must be first. The contingency version argues that contingent beings cannot collectively explain their own existence, so a necessary being is required. Treat them separately, since objections to one need not touch the other.
The Big Bang as a rival account
Modern cosmology proposes the Big Bang as the origin of the observable universe, a hot dense early state expanding into the cosmos we see. Some take this to support the cosmological argument, since a universe with a finite past seems to call for a cause of its beginning. Others argue the Big Bang replaces the need for a divine cause, offering a natural account of the origin. The relationship is contested: a defender of the argument can ask what caused or grounded the Big Bang itself, while a critic can question whether the notion of a cause even applies at or before the initial state, where ordinary time may not extend.
When you meet a criticism, identify its target. If it says the causal chain could be infinite, it attacks the no-infinite-regress premise of the first-cause version. If it says the universe could just be a brute fact needing no explanation, it attacks the demand for a sufficient reason in the contingency version. If it says a natural origin like the Big Bang suffices, it disputes the move from origin to God. Matching objection to premise keeps your evaluation precise.
Objections and evaluation
The argument faces strong objections. David Hume and others challenged the causal principle, asking why the universe as a whole must have a cause even if its parts do, a worry about composition. Many critics press the why-not-stop-here objection: if God can exist without a cause, why can the universe not also exist without one, removing the need for God. Bertrand Russell argued the universe may simply be a brute fact. The defender replies that God, as a necessary being, is the kind of thing that needs no external cause, whereas a contingent universe is not. For the TASC course, present a clear version of the argument, situate it against the Big Bang, and weigh whether the inference from the universe to a necessary first cause succeeds.
At most the argument concludes that there is a first cause or necessary being. It does not by itself establish a personal, loving or all-good God, let alone the deity of any particular faith. Jumping straight from first cause to a fully specified religious God overstates what the argument delivers, a gap critics call the gap problem. Keep the conclusion proportioned to the premises.
Exam-style questions
Questions in the style of TASC exam questions on this dot point, each with a worked answer. They are written by ExamExplained unless tagged "Past paper"; the year shows the paper a question is modelled on.
Practice6 marksExplain Aquinas' first-cause version of the cosmological argument and distinguish it from the argument from contingency.Show worked answer →
A 6 mark response needs both versions and a clear distinction.
First cause. Everything we encounter is caused by something else. The series of efficient causes cannot regress infinitely, for then there would be no first cause and so no later causes at all. Therefore there must be a first, uncaused cause, identified with God.
Contingency. Contingent things exist but might not have, and depend on something else. If everything were contingent, the existence of the whole would remain unexplained. So there must be a necessary being whose existence does not depend on anything else.
Distinction. Markers reward the point that the first-cause version turns on rejecting an infinite regress, while the contingency version turns on the demand for a sufficient reason for why anything exists, and does not require the universe to have begun in time.
Practice16 marks"Modern cosmology removes the need for the cosmological argument." Critically evaluate this claim.Show worked answer →
A 16 mark extended argument essay should connect the argument to the Big Bang and defend a verdict.
Exposition. Set out the cosmological argument (first cause and/or contingency) and the Big Bang as the scientific account of the origin of the observable universe.
Case for the claim. The Big Bang offers a natural origin, apparently removing the need for a divine cause; and Hume questioned why the universe as a whole needs a cause even if its parts do.
Replies for the argument. A defender asks what caused or grounded the Big Bang itself, and notes the contingency version does not depend on a temporal beginning at all: it asks what grounds the existence of a universe that need not have existed. Russell's brute-fact reply is met by the claim that a necessary being needs no external cause whereas a contingent universe does.
Limits. Note the gap problem: at most the argument yields a first cause or necessary being, not a personal or all-good God. Conclude with a defended position, for example that cosmology rivals the temporal first-cause version but leaves the contingency question open, so the claim is too strong. Markers reward the argument, the cosmology link, the composition and brute-fact objections, and a reasoned conclusion.