[HaveHadEnough]

[T]he pope reminds us that the Kantian or neo-Kantian notion that we cannot know absolute truth holds sway in almost every discipline.

I prefer to call it a Socratic notion. Kant sure did write about a lot and certainly wanted us to believe that what he wrote about was the absolute truth; whereas anytime someone mentioned to Socrates that he had discovered or held some truth, Socrates pretty much showed that he was full of crap.

[RobbyS]

I think you need to read more Socrates--that is, Plato. Understand he was not talking about psychological but real certainty, which Dr. Johnson demonstrated by kicking a stone.