Life is made up of a series of judgments on insufficient data, and if we waited to run down all our doubts, it would flow past us.
Learned Hand

Medicine heals doubts as well as diseases.
Karl Marx

Men always talk about the most important things to perfect strangers. In the perfect stranger we perceive man himself; the image of a God is not disguised by resemblances to an uncle or doubts of wisdom of a mustache.
Gilbert K. Chesterton

Mr. Gonzales' failure to respond to questions legitimately posed to him by the Senate raises grave doubts in my mind as to his fitness to serve the people of the United States as their Attorney General.
Daniel Inouye

Never let up. The more you can win by, the more doubts you put in the other players' minds the next time out.
Sam Snead

No man likes to have his intelligence or good faith questioned, especially if he has doubts about it himself.
Henry B. Adams

Nobody doubts my partisanship, but a lot of the activity is nonpartisan.
Norman Lear

One must verify or expel his doubts, and convert them into the certainty of Yes or NO.
Thomas Carlyle

Others too would occasionally entertain and privately express such doubts; though we all had been most solemnly warned by the cruel murder of Saint Francis.
Maria Monk

Our achievements speak for themselves. What we have to keep track of are our failures, discouragements and doubts. We tend to forget the past difficulties, the many false starts, and the painful groping.
Ethel Barrymore

Our doubts are traitors and make us lose the good we oft might win by fearing to attempt.
William Shakespeare

People with lots of doubts sometimes find life more oppressive and exhausting than others, but they're more energetic - they aren't robots.
Antonio Tabucchi

Prohibit the taking of omens, and do away with superstitious doubts. Then, until death itself comes, no calamity need be feared.
Sun Tzu

Seize the moment of excited curiosity on any subject to solve your doubts; for if you let it pass, the desire may never return, and you may remain in ignorance.
William Wirt

Some people swear by writing courses, but whether it really helps American poetry, I have doubts.
Robert Morgan

The author is aware that the essence of the Christian faith is perfectly independent of his criticism. The supernatural birth of Christ, his miracles, his resurrection and ascension, remain eternal truths, whatever doubts may be cast on their reality as historical facts.
David Friedrich Strauss

The citizen is becoming a pawn in a game where nobody knows the rules, where everybody consequently doubts that there are rules at all, and where the vocabulary has been diminished to such an extent that nobody is even sure what the game is all about.
Andrew Eldritch

The deplorable mania of doubt exhausts me. I doubt about everything, even my doubts.
Gustave Flaubert

The only limit to our realization of tomorrow will be our doubts of today.
Franklin D. Roosevelt

The skeptic does not mean him who doubts, but him who investigates or researches, as opposed to him who asserts and thinks that he has found.
Miguel de Unamuno