St. Thomas Aquilas Document Questions

Question: What are the five examples of proof that Aquinas gives to prove the existence of God?

According to the given excerpt/document from Fordham University, the author believes there are five methods of reasoning which can be used to prove the legitimate existence of God.  The author first states that an object or thing, even if it is not real, can be brought into the world via something that exists, using fire as an example. He says that fire is not actual, but can be brought into presence with the help of incendiary tools. Similarly, he reasons that some nonexistent entity such as God can be brought into the world via "some first mover, which is itself moved by nothing---and this all men know as God".  The second area of proof the author uses is from the "nature of existent cause".  The author defines God as "the first efficient cause," indicating that God gives rise to other causes, which constitute the world we live in.  This is similar to a a chain, where an existent entity gives rise to another, which gives rise to another, similar to how a single chain allows more chains to be linked to it, resulting eventually in an entire chain of links.  The third proof the author provides in his attempt to prove the existence of God is via the concept that things take their beginnings preexisting entities.  Events occurring are not accidental, God is the only thing that exists through its own nature and is the beginning of all causes and necessary for the existence of all things.  The fourth piece of proof is derived form the concept that all things vary in degrees in severity but approach the greatest.  The author uses the example that states that there are varying intensities of heat, for example.  The level of heat increasingly increases, until it reaches a maximum.  The author argues that God is the entity that represents the maximum degree of severity for all aspects which govern the universe.  The greatest is the cause of all things of its kind, and therefore, God is the cause of existence of all things, including goodness and perfection.  The fifth piece of evidence brought up by the author in his attempt to persuade the reader to accept the existence of God pertains to the natural phenomenon and operation of natural objects or bodies, which occur in accordance with a higher plan and are not occurring randomly.  They have a purpose; things with no intelligence are directed by a knowing and intelligent power that is manifested in the form of God.  Therefore, the author rests his case, his attempt to prove the existence of God based on the writings of Aquinas, on the 5 presented pieces of evidence/proof.