Albert Schweitzer
Constant kindness can accomplish much. As the sun makes ice melt, kindness causes misunderstanding, mistrust and hostility to evaporate.
Kahlil Gibran
Doubt is a pain too lonely to know that faith is his twin brother.
George Iles
Doubt is the beginning, not the end, of wisdom.
Galileo
Doubt is the father of invention.
Colton
Doubt is the vestibule through which all must pass before they can enter into the temple of wisdom.
Christian N. Bovee
Doubt whom you will, but never yourself.
Francis 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.
John Kanary
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.
Rosalyn Carter
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.
John Burroughs
It is always easier to believe than to deny. Our minds are naturally affirmative.
Francois de La Rochefoucauld
Jealousy lives upon doubts, it becomes madness or ceases entirely as soon as we pass from doubt to certainty.
William Shakespeare
Modest doubt is called the beacon of the wise.
