Thomas Aquinas Five Proofs For God's Existence

In Chapters 1 and 2 of Genesis, we are told that God creates both the universe and everything that is in it. Thomas Aquinas, a leading scholar of the Middle Ages, argued that “Everything in the universe has a cause. Trace those causes back and there must have been a First Cause that triggered everything else. God is that First Cause.”

Aquinas argued the existence of God with five main points. Aquinas began by saying that nothing can be a cause of itself; rather every event was caused by some prior event. Therefore event A causes event B that leads to event C and so forth. He believed in this cause and effect relationship but believed that there must be a first cause as a starting point. When contemplating this starting point Aquinas rejected the possibility of an infinite series of events. This means that the universe has not existed forever and there must have been something from which every single event stems. There must be an uncaused first cause, which Aquinas concluded to be God. The first cause is called the unmoved mover. The unmoved mover is what set all other events and beings in motion.

The series also can not have a cause from within because no one being within the series is necessary. An example of this would be the set of real numbers we use today. Taking one number away from the set would not cause the set to cease in existence. There is no beginning to the number set and no end as well. If we view the Universe with the same concept then Aquinas’ theory can be seen to have a major flaw.

In the article, “The Five Ways,” from Summa Theologica, Thomas Aquinas argues whether God exists, which

The ideas that God is altogether simple and that he has complete knowledge of himself and all things form the foundation for much of Aquinas' arguments for the existence of a world of contingent beings, deriving from a necessary being. Aquinas continues this line of reasoning in his argument that God's knowledge is the cause of things. Aquinas likens this relationship to the artificer and the art. The artificer, working through his intellect, creates the art. As Aquinas says, "Hence the form in the intellect must be the principle of action." Aquinas also says, "Now it is manifest that God causes things by his intellect, since his being is his act of understanding; and hence his knowledge must be the cause of things, insofar as his will is joined to it." Aquinas is saying here that if God's intellect creates things, i.e. human beings, then he must also be the cause of those things because his intellect is the same thing as his will. Keeping in mind that God is altogether simple, this conclusion naturally follows a logical sense of reasoning.

Several hundred years ago, two great philosophers Thomas Aquinas’s and Rene Descartes used the method of ontological argument for the existence of God and used intuition and reason alone to get to each other’s theory. Rene Descartes wrote out several mediations, but the one we’re going to touch base on is meditation III that he wrote in the 1600’s; While Thomas Aquinas’s wrote his five proofs of God in 1270 that specifies God’s existence in each proof; the one that gives the best argument is the existence of God in his III proof. While both philosophers provide great information about their reason about God, Thomas Aquinas’s and Rene Descartes both attempt to prove the existence of God, but

As discussed in class, modern scientific research provides alternatives to Aquinas’s presumed necessities. An infinite series of causes no longer seems impossible. This research disproves Aquinas 's third premise (P3), and his argument for God as the first cause is consequently unnecessary. Furthermore, the fourth premise still has a logical gap between the first cause and God. Aquinas offers no explanation as to why the first cause must be God or a supernatural being at all. The first cause may just as easily be a spontaneous event, or a first cause may not exist at all in an infinite universal cycle.

Descartes’s attempt to prove the existence of God begins with the argument that he has the clear and distinct idea of God as the “most perfect being and that there must be at least as much reality in the efficient and total cause in the effect of that cause” (40). Therefore, this idea of God can’t be from himself, but its cause must be God. So God exists. In what follows I’ll explain these terms and why the premises seemed true to him.

The first part in which one can prove that there is a God is based on change. In the first part, Aquinas mentions that things change and that there has to be something which brings about that change, but at the same time is changeless. Aquinas states that “a thing in process of change cannot itself cause that same change; it cannot change itself” (Aquinas 45). For example, he gives an example about wood and fire. The wood is able to be hot but simply cannot make itself change without having an outside source that will cause it to become hot. The fire, that is naturally hot, will indeed make the wood hot and as a result, will change the wood.

The 17th century philosopher Rene Descartes believed that God exists. His proof of an all perfect being’s existence was explained by having an idea of God that had to have been caused by God. But simply having an idea of God is not enough for there to necessarily exist such a being. This paper will critically examine Descartes’s causal argument though its premises and conclusion.

singularity there is no time and all of the laws of physics as we know

Aquinas' second proof is similar to his first in that it relates to cause and effect. St. Thomas reasoned that in a world of order there is an order to all cause and effect. And , since there is a cause for the existence of all things there must be a cause that caused all things and had no cause itself. He points out that nothing in creation existed prior to itself and the causality cannot be traced back infinitely. If the efficient or first cause did not exist then nothing would exist. That first or efficient cause is God.

Here Aquinas argues that everything that happens is the cause of something, but nothing can cause itself. If we trace back a cause all the way back to the beginning of the world, it could not have caused itself. Therefore, God must have been the first cause. Aquinas’ third proof is the Argument from Contingency. We see that everything here on earth is finite. People die, empires fall. All things must come to an end. That means things had to have a beginning where nothing was in existence yet. How did things come into existence? God. Aquinas’s 4th argument is the Argument of Degrees. Here we judge things to be a certain degree of good or bad. But what are we comparing that to? If they have a certain degree of good and bad, then what is the greatest degree of good? And that must be God. Aquinas’s final argument is his Argument from Design. Perhaps one of his strongest arguments Aquinas says that there must be an intelligent designer behind everything. Random objects don’t have any brains to act the way they do. But they are directed in the way they act by God.

When St. Thomas wrote this section of his ground breaking essay what he ultimately was claiming, was that through philosophy and observation, there is a way to see how the natural world points to there in fact being a God. Although to some it may seem absurd, modern day science based upon observation and experimentation, does not completely discredit or debunk the first, second, third, and fifth arguments from St. Thomas Aquinas’s Five Ways, but rather it suggests substantial evidential credibility, in regards to his theories on God’s existence.Concepts, theories, and laws drawn from the

St. Thomas Aquinas is a famous philosopher from the medieval period who believed there was a god. One of Aquinas significant works in philosophy was his argument that God exists. In Aquinas' argument, or also known as Summa Theologica, he uses five arguments to support the claim that God exist and four of them are cosmological argument. Cosmological arguments are arguments that try to reason that god exists because of the universe or cosmos leads to the conclusion that god exists. His first argument is the Argument From Motion. In the argument of motion Aquinas observed that we live in a world and universe that things are continuously moving, and he also noticed that to make something move something has to move or start it moving. To Aquinas this means that everything that is moving must have been moved by something or someone and there had to be a time when the thing wasn't moving. The mover for the beginning of everything in Aquinas' argument is God. The second argument is the Argument From Causation which is very similar to the Argument From Motion. Aquinas thoughts were that everything that is caused had to be caused by something else. Nothing can cause it's self so there must be an thing that is uncaused and to Aquinas that thing is God because it can't go back forever. The Third argument is The Argument From Contingency. Contingency is a future or thing that could have not existed and Aquinas believe that the world can't always be contingent because then it could have