Summary Of The Five Ways By Thomas Aquinas

St. Thomas Aquinas’s first cosmological argument, the prime mover, defines things in the world as being either in a state of potentiality or in a state of actuality. Those things that are in potentiality are things that have the capability of being reduced to another form. Such as a boy is potentially a man, or tree is potentially a house. Things that are in a state of actuality are things that are currently reaching their potential; such as that boy becoming a man, or that tree becoming that house. Aquinas observed that all things in a state of actuality had to have been put into that state by something that was already in actuality. In thinking about this he concluded that there would have to be an infinite regress of actual things making potential things actual. He concluded that this would be impossible because given that, there would be no first mover. He instead, postulated that there must be a first mover. A being that never had potential but only has existed in a state of infinite actuality. That what we call God.

However, Inductive and Deductive Arguments could be used to prove the existence of God. An Inductive argument is a posteriori (based on experience) which is logic involving reasoning from effect to cause.

Aquinas’ argument is contradicted by a previously learned concept called Ockham’s Razor, which focuses on the simplest reasoning without any assumptions. The text from Summa Theologica contradicts this by creating the idea of an eternal God to explain the universe. The simplest idea would be to believe that the universe is eternal itself, rather than creating an exterior being. The idea behind Ockham’s Razor is that the simplest answer is the most easily testable and most likely. Where did the idea of God creating the universe even begin? This concept is far more complex than simply the universe created itself.

states that all wars are sinful, but if it is justified it is not a sin; however, I feel that just because one has authority over others, this shouldn't

Both of these proofs of God’s existence are not convincing since they are founded on arguments that can be challenged. The method used by Descartes to

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.

Aquinas sets up this argument in his discussion of whether or not God exists. His five proofs set up the framework for much of his later writings in the Summa

Thomas Aquinas’ five ways are his arguments of the five proofs that God exists in some form, these five ways have standard abjections. The arguments are named as follows: argument from motion, arguments from causation, arguments from contingency, argument from gradations of goodness, and the argument of governance. These are Aquinas’ theories of why things change, whatever is changing is being changed by something else.

To further validate his proof, he attempts to show God’s existence as an a posteriori claim. Descartes states that as humans we have the idea of God in our minds. We conceive God as a perfect being, that of perfect existence. As shown in the quote from page 37, this idea of God is beyond our reasoning to create, and must have come from God itself. Our idea of God certifies his existence. Descartes deviates from the method again, and his reasoning fails to provide an absolute proof.

I will be writing about St. Thomas Aquinas’s “Five ways” and William Paley’s “Teleological argument”. I will be looking into the difference between the two philosophers who both believe in God but have two different approaches on how they can both prove that God does exist. I would like to look deeper into the difference between the two and to see whose theory of Gods existence is more logical with the least arguments. I will be looking at two of Aquinas’s laws two and five,

Thomas Aquinas theorized five different logical arguments to prove the existence of God utilizing scientific hypotheses and basic assumptions of nature. In the fifth of his famous “Five Ways”, Aquinas sets forth the assumption that all natural bodies move toward an end. Since bodies are constantly moving in the best way possible to achieve that end, the path must be designed. God, of course, is the ultimate designer of the universe.

In A Discourse on the Method, Descartes attempted to prove the existence of God in a priori manner. He did not trust his own senses when trying to prove the existence of God and therefore he relied on the ontological argument. By making the same assumption made by Anselm, which was that an ontological argument assumes that existence is a predicate of God, Descartes is able to conclude that ‘God exists’ is true by definition because the subject ‘God’, who already contains all perfections, already contains the predicate – exists, which is a perfection. Although this may be perceived as a strong claim to believers, many such as Gaunilo would have disagreed. Descartes postulates his argument in the fourth part of his Discourse in order to try and prove the existence of God. One must discuss why one feels Descartes attempted to do so and exactly how convincing his claim is. However, before one can understand his claim, it is important to grasp an idea of the background that Descartes was writing from when he wrote the Discourse and the meaning of proof.

The final crucial proof of the existence of God is Aquinas fourth proof. This proof looks at qualities of humans; all humans possess many different attributes which we consider unique to each individual. This is when standards are formed humans began to have a certain criteria for how or what someone with a given attribute should act or how they should portray themselves. The only way this standard could come into existence is to believe that there is a perfect creation possessing all qualities and expressing them in the most precise and perfect way. This perfect creation is God, the person in which humans get the laws at which the obeyed by. Aquinas five proofs of the existence of God are much more extensive but just looking at the proof of motion and the proof of perfection it becomes unquestionable that there is an almighty creation. This superior creation creates laws at which

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