The first is that both theories believe that there must have been a starting point for the universe. They both believe that it was created for a reason and that there will eventually be an end point. Saint Aquinas believes that everything is constantly changing and that for change to begin, there must be something for the change to occur. The primary source of moving things is of course God. Aquinas believes that all things trace back to God, who "is a being having its own necessity..." (Philosophical Proofs for the Existence of God) A key belief in Aquinas' design argument is that if anything exists, there is a reason why it exists. exists and is a necessity. Another comparison is that Kalam's cosmological argument and Aquinas' design argument both believe that the Universe was created by the big bang. The difference between Kalam's cosmological argument is that Aquinas' design argument is caused by motion, an object is in motion, it can send another object into motion. All things in the universe that are moving and changing can be attributed to