“What the world wants is a Christian church that has both the courage of its convictions and the courage of its doubts.”— Lyman Abbott
“The beginning of wisdom is found in doubting; by doubting we come to the question, and by seeking we may come upon the truth.”— Peter Abelard
“I was 11 when I started, and I'd been working for a year, and I was just like, 'God, I'm never going to be able to do this again. This is a one-shot deal for me.'”— Brad Renfro
“Argument is conclusive, but it does not remove doubt, so that the mind may rest in the sure knowledge of the truth, unless it finds it by the method of experiment.”— Roger Bacon
“If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties.”— Francis Bacon
“I wouldn't put it past God to arrange a virgin birth if he wanted, but I don't think he would.”— David Edward Jenkins
“The scientific man is not in the least wedded to his conclusions. He is leaning backwards, in the attitude of doubt.”— Charles Sanders Peirce
“When a man says he has an open mind, he generally means he is in a state of doubt.”— George Barr McCutcheon
“We do not really think, we are barely conscious, until we are forced to think, and we are not forced to think unless we are in a state of doubt.”— Charles Sanders Peirce