Alexander Pruss's Blog

St Thomas holds that we cannot know by natural reason that God is a Trinity. However, he also endorses a version of St Augustine’s account ...

Consider major dividing lines in ontology, such as between trope theory and Platonism. Assume theism. Then all possibilities for everything ...

Here’s an analogy I’ve been thinking about. God’s value is related to other infinities like (except with a reversal of order) zero is relate...

Back in April , I suggested that there are two possible privation theories concerning evil: every evil is a privation for every evil, wh...

Each of Alice and Seabiscuit is a human or a horse. But Alice is a human or a horse “on other grounds” than Seabiscuit is a human or a horse...

According to Aquinas, whenever we correctly say something non-negative of God, we speak analogically. It is correct to say that Socrates is...

On moving spotlight theories, eternalism is true: past, present and future things all exist. But the present is metaphysically special: you ...

Even though nobody thinks Strong AI has been achieved, we attribute beliefs to computer systems and software: Microsoft Word thinks that I...

Here is an argument against eternalism: If eternalism is true, times are like places. Times are not like places. So, eternalism is ...

I ought to respect innocent human life. So I ought not feed cyanide to the innocent. I ought to respect the legitimate intellec...

Spot is a cat and Tob is a table. Spot has four legs and Tob has four legs. But "has four legs" in these two claims is ana...

Christ is God and Christ is a human. God is unchanging and humans are changing. God is omnipresent and humans are spatiotemporally d...

Here is an interesting line of thought. Consider these two questions: What is it for x and y to be identical? What necessary and...

Duns Scotus defines univocal predication as follows: P is univocal provided that P x &~ P x is always a contradiction, and ...

It is a broadly Aristotelian doctrine that many predicates apply to individuals in a kind-relative way. Call such predicates k-pr...

St. Athanasius insists that it was crucial for Christ's redemption of us that Christ both share in the divine nature and in th...