Doubt Sayings and Quotes

Below you will find our collection of inspirational, wise, and humorous old doubt quotes, doubt sayings, and doubt proverbs, collected over the years from a variety of sources.

Doubt whom you will, but never yourself.     

Christine Bovee

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

Franklin D. Roosevelt

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


The beginning of wisdom is found in doubting; by doubting we come to the question, and by seeking we may come upon the truth.     

Pierre Abelard

A mind troubled by doubt cannot focus on the course to victory.     

Arthur Golden

Doubt grows with knowledge.     

Johann Wolfgang von Goethe

To have doubted one's own first principles is the mark of a civilized man.     

Oliver Wendell Holmes

Doubt is useful, it keeps faith a living thing. After all, you cannot know the strength of your faith until it has been tested.     

David Magee

To know much is often the cause of doubting more.     

Michel de Montaigne

When in doubt, win the trick.     

Edmund Hoyle

Doubt is the father of invention.     

Galileo Galilei

Doubt comes in at the window, when Inquiry is denied at the door.     

Benjamin Jowett

To believe with certainty we must begin with doubting.     

Stanis_Aw Leszczy_Ski

Doubt is a pain too lonely to know that faith is his twin brother.     

Khalil Gibran

Doubt is the origin of wisdom.     

Rene Descartes

It is by doubting that we come to investigate, and by investigating that we recognize the truth.     

Peter Abelard

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

Thomas Carlyle

Doubt is a killer. You just have to know who you are and what you stand for.     

Jennifer Lopez

Doubt is what gets you an education.     

Wilson Mizne

Your doubt can become a good quality if you train it. It must become knowing, it must become criticism.     

Rainer Maria Rilke

Modest doubt is called the beacon of the wise.     

William Shakespeare

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

Paul Tillich

Doubts are death. Doubts are the dry rot of life.     

Maharishi Mahesh Yogi

When in doubt, don't.     

Benjamin Franklin

Deep doubts, deep wisdom; small doubts, little wisdom.     

Chinese Proverb

Doubt is the vestibule through which all must pass before they can enter into the temple of wisdom.     


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

If doubt is challenging you and you do not act, doubts will grow. Challenge the doubts with action and you will grow. Doubt and action are incompatible.     

John Kanary

If you doubt you can accomplish something, then you can't accomplish it. You have to have confidence in your ability, and then be tough enough to follow through.     

Rosalyn Carter

Doubt is the beginning, not the end, of wisdom.     

George Iles