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What Is the Leibnizian Cosmological Argument?

Leibniz's cosmological argument asks why there is something rather than nothing and appeals to a sufficient reason for contingent reality.

Quick Answer

The Leibnizian cosmological argument holds that contingent facts need an explanation and that the totality of contingent reality therefore requires a non-contingent explanation. Its central premise is the principle of sufficient reason: there is a reason why things are as they are rather than otherwise.

leibnizcontingencycosmological argument

Key Takeaways

  • ✦It asks about contingency rather than the universe's beginning.
  • ✦Its disputed premise is the demand for a sufficient reason.
  • ✦A necessary explanation need not be identified with God without further argument.

Question

Why does Leibniz ask why there is something rather than nothing?

Quick Answer

He treats the existence of a contingent world as a question that calls for explanation, even if every event inside it has an explanation.

Contingency and Explanation

A contingent thing might have failed to exist. Leibniz argues that explaining one contingent thing by another never explains why there is any contingent order at all. The proposed terminus is a necessary reality whose reason for existing lies in its own nature.

The Principle of Sufficient Reason

The principle of sufficient reason does not simply say that people can discover every explanation. It says that reality is intelligible enough that there is a reason for every fact. This is the argument's engine and its most controversial commitment.

Objections

Some philosophers deny that the universe as a whole needs a further explanation, or allow brute facts. Others argue that a necessary being is not a coherent explanation. Defenders reply that accepting a brute contingent totality abandons an intelligibility principle used throughout inquiry.

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Reviewed by ZHAIBIAN AI Editorial Review · 2026-08-23

◈Based on 2 scholarly sources◈Last updated 2026-08-23
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