All that to say this: I have come to really appreciate a prayer he prayed, as over the last few months my nicely-bundled theology has been turned on its head. He once prayed, "I do not try to understand you so that I can trust you. I trust you so I can understand you."
It fits nicely with another quote that resurfaces regularly for me right now. It was advice given to me by a preacher friend. "Learn to be content in the mystery."