Arguments for the existence of God
Some of the most famous arguments in philosophy try to show by reason alone whether a God exists.
The cosmological argument
Everything that begins to exist seems to have a cause. If the universe began to exist, the argument goes, it too had a cause, and that first cause must itself be uncaused. Defenders identify this first cause with God. Critics ask why the chain of causes cannot go back forever, and why an uncaused cause would have to be anything like a personal God.
The teleological argument
The design argument points to order and apparent purpose in nature, such as the eye's fit to seeing, and infers an intelligent designer. Evolution by natural selection gave a powerful alternative explanation for biological design. Modern versions focus instead on the fine-tuning of physical constants that make life possible.
The ontological argument
Anselm argued from the very idea of God as 'that than which nothing greater can be conceived'. A being that exists in reality is greater than one that exists only in thought, so, he claimed, God must exist in reality. Critics, including Kant, objected that existence is not a property that adds greatness to an idea.
Flashcard
From the existence of the universe to a first cause
Check your understanding
Which argument reasons from the very concept of God, without appeal to the observed world?