by Lisa Quintana
When I ask students how can we know things, it’s assumed that knowledge is primarily gained through the Scientific Method.1 But when I say that’s not the only way to know certain things, I get blank stares. There is another way to know stuff — through reasoning skills. Sadly, those skills have been broadly underdeveloped. However, by using logic, we may be able to answer one of the most important questions of all time…
Nearly one-thousand years ago, a brilliant monk named Anselm believed one could convince themselves of the truth of God’s existence purely through the mind – using reason, logic and rationality. One of the arguments Anselm developed to show this is called the Ontological Argument. I know, that sounds like a mouthful, but ontology is a branch of metaphysics dealing with the ‘nature of being.’ Philosopher J.P. Moreland once described it as the “what-ness” of something, i.e., what kind of being is God?
Born in 11th Century, in his adolescence, Anselm decided that there was no better life than the monastic one. He sought to become a monk, but was refused by the Abbot of the local monastery. Leaving his birthplace as a young man, he headed north across the Alps to France, eventually arriving at Bec in Normandy, where he studied under the Benedictine monk and Archbishop of Canterbury. He became a monk at 27 years old.
Modal Logic – what matters is what is ‘logically coherent’
Logic derives from order. Without order, nothing makes sense (including existence). Logic uses propositions that are possible, impossible, necessary and contingent (dependent for existence, conditional). Logical possibilities can deal with the immaterial aspects of knowledge, i.e. abstracts like numbers. Is there a number 3 walking around out there? No. It is an abstract ‘immaterial reality’ that describes something. Logically coherent is what a MGB would be because a MGB would not do illogical absurdities, (i.e. like a square circle, the shape of purple, or a triangle with 4 sides).
“… it is impossible for God to lie,” Hebrews 6:18
“God cannot be tempted with evil,” James 1:13
If God was not necessary but contingent (dependent on something else for existence), then that implies God has a Creator, which is not logical if God is the MGB (or the greatest conceivable being). Who made God is asking who is greater than the MGB — incoherent. If God exists, He is a necessary being: not contingent on anything or anyone.
Conceptualizing God
If the concept of God does not contain any logical absurdities, then it is possible that God exists. Being ‘necessary’ is true in all possible realities. This idea aligns with the Prime Mover concept from ancient Greek Philosopher, Aristotle (that which moves without being moved). This is what some call the “uncaused Cause.”
But is God logically impossible?
J.L. Mackie (c. 1950s atheist philosopher) argued yes, God is logically impossible based on the problem of evil. Mackie argued that it’s a logical contradiction of an all-good being with the existence of evil
In the 1970s, Christian Philosopher Alvin Plantinga, currently one of the world’s most influential philosophers, refutes Mackie’s problem of evil argument with the Free Will Defense. In other words, it is possible that an all-good God can exist with evil since people have free will, and history has proven we can do some pretty evil things with it. God created humans in His image and that includes choices (a.k.a. free will). So God did not create evil; evil is a corruption of goodness. Thus, in keeping with Anselm’s idea that as long as it is logically possible, then it follows God exists.
Some call Anselm a “thinker who is always relevant.” C. S. Lewis was also influenced by Anselm’s concept of the God being the root of ALL goodness, emulated in Mere Christianity:
1. Some beings are more nearly perfect than are others.
2. But things cannot be more or less perfect unless there is a wholly perfect to which they can be compared.
3. Therefore, there must be a Most Perfect Being (God).
Anselm brought the use of reason (logic) back into Church theology. His Ontological Argument is his most famous argument, and it is still being used today (in various formats/revisions).
So, can we know God by reason alone? What do you think?
Psalm 19:1-2, “The heavens declare the glory of God, and the sky above proclaims his handiwork. Day to day pours out speech, and night to night reveals knowledge.”
Footnotes
- Knowledge based on demonstrable and reproducible data.
- Roger Olson, The Story of Christian Theology, (Illinois: IVP Academic, 1999), 318.
- A small group (5-15 people), guided by a facilitator, finds a precise answer to some universal questions.
- A necessary being is one that is not contingent upon anything else; God is self-existent, the uncaused-cause of it all.
- Immaterial realities need to be known using philosophical logic; the scientific method can only measure material realities.
- A MGB has to be a necessary entity that exists because a contingent being cannot be maximally great.
- “Possible worlds” is a philosophical term used to express a way reality could be (various realities). Our actual world is one of these “coulds”.
I copied this post for my high school students. Wonderful!
Well thank you so much for sharing it with your students, Nancy! That is a blessing to hear. I really think it’s important to teach people how we obtain knowledge, besides the scientific method.
This was really educational Lisa, thanks for sharing all this! I thought you did a great job weaving details of Anselm’s life into the argument for God.
Thank you! With your name, philosophical logic, I thought you might like this particular blog post since it’s all about logic. I am a huge fan of Saint Anselm now! To think that we’re still talking about his argument 1000 years after he wrote it, that’s a brilliant thinker.
I found your post very educational. I am a believer so sometimes it is hard to share just my “feelings” with someone. I like all the logic St Anselm uses. I will save this for later, as needed.
Sometime sharing your feelings with seekers is simply not enough, as many today need more evidence. And we can use philosophical logic to reason our way to God, at least knowing that he exists.