Alexander Pruss's Blog

Some actions are are things I can do immediately: for instance, I can immediately raise my hand. Others require that I do something to enabl...

It’s just occurred to me that there is a really quick argument for the ought-implies-can principle: If you do the morally best you can in ...

It is widely thought that our actions are governed by at least multiple types of normativity, including the moral, the prudential and the ep...

I am sick. Here's a heartening argument: Next week I have some teaching and I can't teach while sick. I ought to do the teaching. Ou...

First application: 1. God ought to exist. 2. So, God can exist. (Ought implies can) 3. So, God exists. (By Ontological Argument) Second:...

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

You tell me that you saw a beautiful sunset last night. I conclude that you saw a beautiful sunset last night. You are talking about...

Kolodny and MacFarlane give a neat puzzle. The setup: ten miners are trapped in a shaft—A or B, although we do not know which—a...