To the wise, life is a problem; to the fool, a solution.
Marcus Aurelius

It's not wise to violate rules until you know how to observe them.
T. S. Eliot

To make no mistakes is not in the power of man; but from their errors and mistakes the wise and good learn wisdom for the future.
Plutarch

For to err in opinion, though it be not the part of wise men, is at least human.
Plutarch

Belief is a wise wager. Granted that faith cannot be proved, what harm will come to you if you gamble on its truth and it proves false? If you gain, you gain all; if you lose, you lose nothing. Wager, then, without hesitation, that He exists.
Blaise Pascal

I will give you a definition of a proud man: he is a man who has neither vanity nor wisdom one filled with hatreds cannot be vain, neither can he be wise.
John Keats

Controversy equalizes fools and wise men - and the fools know it.
Oliver Wendell Holmes

Who is wise in love, love most, say least.
Alfred Lord Tennyson

I was wise enough to never grow up while fooling most people into believing I had.
Margaret Mead

Divide and rule, the politician cries; unite and lead, is watchword of the wise.
Johann Wolfgang von Goethe

Ignorant men raise questions that wise men answered a thousand years ago.
Johann Wolfgang von Goethe

Wisdom is the right use of knowledge. To know is not to be wise. Many men know a great deal, and are all the greater fools for it. There is no fool so great a fool as a knowing fool. But to know how to use knowledge is to have wisdom.
Charles Spurgeon

He is a wise man who does not grieve for the things which he has not, but rejoices for those which he has.
Epictetus

It is the nature of the wise to resist pleasures, but the foolish to be a slave to them.
Epictetus

The two powers which in my opinion constitute a wise man are those of bearing and forbearing.
Epictetus

Don't follow any advice, no matter how good, until you feel as deeply in your spirit as you think in your mind that the counsel is wise.
Joan Rivers

We are made wise not by the recollection of our past, but by the responsibility for our future.
George Bernard Shaw

Men are wise in proportion, not to their experience, but to their capacity for experience.
George Bernard Shaw

The misfortune of the wise is better than the prosperity of the fool.
Epicurus

Misfortune seldom intrudes upon the wise man; his greatest and highest interests are directed by reason throughout the course of life.
Epicurus