What would it take for you to believe in God?

Philip Pullman was recently interviewed (for the 5-minute interview slot) by Matthew Stadlen. Asled if he was an agnostic or an atheist, he said that, strictly speaking, he was an agnostic since he could not know for sure, but on a small scale (having seen no evidence to convince him) he was atheist. Stadlen then asked what it would take for him to believe in God - his reply was:

A direct experience of some sort, I imagine. I don't think rational argument would ever do it.

Mull that one over.