Distinguish different notions of possibility, and explain how that bears on Aquinas's argument.

In the
Summa Theologica, Thomas Aquinas lays out five ways (in Latin,
quinque viae) to show God exists, also referred to as the proofs of Gods
existence. Aquinass third way, which relates to contingency, is known as the argument from
possibility and necessity.

Two contrasting earlier approaches to the
possibility or necessity of existence are those of the Greek philosopher Aristotle and the
sixth-century neo-Platonist John of Alexandria (or Johannes Philophonus). While Aristotles
natural theology was based on an eternal cosmos with no beginning or end, it is considered
anti-Creationist. John of Alexandria, critiquing Aristotle, argued against the
eternity...

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