Better trust all and be deceived,. And weep that trust, and that deceiving, Than doubt one heart that, if believed, Had blessed one's life with true believing.
Francis Anne Kemble( 1809-1893)

In contemplation, if a man begins with certainties he shall end in doubts; but if he be content to begin with doubts, he shall end in certainties.
Francis Bacon( 1561-1626) English Philosopher, Essayist, and Statesman

Jealousy lives upon doubts, it becomes madness or ceases entirely as soon as we pass from doubt to certainty.
Francois de La Rochefoucauld( 1613-1680) French Classical Writer

The only limit to our realization of tomorrow will be our doubts about reality.
Franklin Delano Roosevelt No Bio Data

Doubt is the father of invention.
Galileo( 1564-1642) Italian Astronomer and Mathematician

He that knows nothing doubts nothing.
George Herbert( 1593-1632) English Metaphysical Poet

Doubt is the beginning, not the end, of wisdom.
George Iles No Bio Data

Men become civilized, not in proportion to their willingness to believe, but in proportion to their readiness to doubt.
H. L. Mencken( 1880-1956) American Editor, Author, and Critic

Faith keeps many doubts in her pay. If I could not doubt, I should not believe.
Henry David Thoreau( 1817-1862) American Essayist, Poet, and Naturalist

Doubt is an incentive to truth, and patient inquiry leadeth the way.
Hosea Ballou( 1771-1852) American Clergyman, Founder of Universalism

Doubt is part of all religion. All the religious thinkers were doubters.
Isaac Bashevis SingerAmerican writer. Interview in New York Times magazine (3-12-1978)

We know accurately only when we know little, with knowledge doubt increases.
Johann W. von Goethe( 1749-1832) German Poet, Dramatist, Novelist, and Scientist

There was a castle called Doubting Castle, the owner whereof was Giant Despair.
John Bunyan( 1628-1688) English Author

It is always easier to believe than to deny. Our minds are naturally affirmative.
John Burroughs( 1837-1921) American Naturalist and Author

Doubt is a pain too lonely to know that faith is his twin brother.
Kahlil GibranNo Bio Data

If there were no falsehood in the world, there would be no doubt; if there were no doubt, there would be no inquiry; if no inquiry, no wisdom, no knowledge, no genius.
Landor( 1775-1864) English Poet and Essayist

Human beings are perhaps never more frightening than when they are convinced beyond doubt that they are right.
Laurens Van der PostSouth African mystic/The Lost World of the Kalahari ( 1958)

Life is doubt, and faith without doubt is nothing but death.
Miguel de Unamuno( 1864-1936) Spanish Philosopher and Writer

To have doubted one's own first principles, is the mark of a civilized man.
Oliver Wendell Holmes( 1809-1894) American Author, Wit and Poet

Doubt is the key to knowledge.
Persian Proverb

To doubt is worse than to have lost; And to despair is but to antedate those miseries that must fall on us.
Philip Massinger( 1583-1640) English Dramatist

Never do a thing concerning the rectitude of which you are in doubt.
Pliny the Younger( 61-105 A. D.)

Dangers bring fears, and fears more dangers bring.
Richard Baxter( 1615-1691) English Nonconformist Theologian

Attempt the end, and never stand to doubt;. Nothing's so hard but search will find it out.
Robert Herrick( 1591-1674) English Poet