“Faith doesn't mean you never doubt. It only means you never act upon your doubts.”

“Progress is born of doubt and inquiry. The Church never doubts, never inquires. To doubt is heresy, to inquire is to admit that you do not know—the Church does neither.”

“You should never, never doubt something that no one is sure of.”

“Doubt is the beginning of wisdom. It means caution, independence, honesty and veracity. Faith means negligence, serfdom, insincerity and deception. The man who never doubts never thinks. He is like a straw in the wind or a waif on the sea. He is one of the helpless, docile, unquestioning millions, who keep the world in a state of stagnation, and serve as a fulcrum for the lever of despotism. The stupidity of the people, says Whitman, is always inviting the insolence of power.”

“You see that old woman? That will never happen to you. You will never grow old, and you will never die.
And it means something else too, doesn't it? I shall never ever grow up.”

“Being with you is the best thing that's ever happened to me, the one perfect decision I've made in a lifetime of fumbling and poor judgment. I'd go through it all again to be by your side. Never doubt that. Never doubt how I feel about you.”

“Christianity is a life, not a doctrine… I'm not saying never doubt or question. The Lord gave you a mind so that you would make honest use of it. I'm saying you must be sure that the doubts and questions are your own.”

“Never do a thing concerning the rectitude of which you are in doubt.”
Quod dubites, ne feceris.

“Never doubt of your talents, all you wait for is just a right opportunity.
Then, you can fly high up to where you belong…….”

“When you doubt your power, you give power to your doubt.”