Doubt makes the mountain which faith can move

Doubt is the beginning not the end of wisdom

Doubt is not the opposite of faith; it is one element of faith

He who knows nothing, doubts nothing.

Doubt everything. Find your own light.

The desire for a strong faith is not the proof of a strong faith, rather the opposite. If one has it one may permit oneself the beautiful luxury of skepticism: one is secure enough, fixed enough for it.