A set of five arguments to prove the existence of God, devised by Thomas Aquinas.

The first three are similar to the Cosmological argument. The fifth one is the argument from design. The fourth says: "we see that some things are better than others (eg a sculpture can be said more beautiful than another), which leads to the necessity of a perfect standard to evaluate all other things; this perfec standard being, of course, God.

All 5 are helplessly flawed. See Anselm of Aosta.