[D-fendr]

What is it about one man that causes him to choose to believe and what is it about another man that causes him to not believe?

I have my own experience, other's have theirs. I don't believe it can be put to one thing. It's all of a piece, but the pieces vary.

[Dr. Eckleburg]

But surely (may I call you Shirley?) your church has given you a clue as to why one man believes and another man doesn't.

What makes one man believe and another man not believe?

Most Christians should be able to answer that question, if for no other reason than they (hopefully) know why they themselves believe.