As I posted what seems like an eternity ago, I am making my way (albeit very slowly) through Moby-Dick. The whole book is great, but the following passage seemed to jump out at me:
"...rainbows do not visit the clear air; they only irradiate vapor. And so, through all the thick mists of the dim doubts in my mind, divine intuitions now and then shoot, enkindling my fog with a heavenly ray. And for this I thank God; for all have doubts; many deny; but doubts or denials, few along with them, have intuitions. Doubts of all things earthly, and intuitions of some things heavenly; this combination makes neither believer nor infidel, but makes a man who regards them both with equal eye." --Moby-Dick, Chapter 88.
I think I forget sometimes that doubt is a natural, even positive, emotion. If we never inquire we'll never find out.