Poets utter great and wise things which they do not themselves understand.
Plato

A word to the wise is infuriating.
Hunter S. Thompson

No man is so foolish but he may sometimes give another good counsel, and no man so wise that he may not easily err if he takes no other counsel than his own. He that is taught only by himself has a fool for a master.
Hunter S. Thompson

No wise man ever wished to be younger.
Jonathan Swift

The latter part of a wise person's life is occupied with curing the follies, prejudices and false opinions they contracted earlier.
Jonathan Swift

A wise man should have money in his head, but not in his heart.
Jonathan Swift

A wise person should have money in their head, but not in their heart.
Jonathan Swift

I have read in Plato and Cicero sayings that are wise and very beautiful; but I have never read in either of them: Come unto me all ye that labor and are heavy laden.
Saint Augustine

Is there anyone so wise as to learn by the experience of others?
Voltaire

Superstition is to religion what astrology is to astronomy the mad daughter of a wise mother. These daughters have too long dominated the earth.
Voltaire

He is a hard man who is only just, and a sad one who is only wise.
Voltaire

He who is not just is severe, he who is not wise is sad.
Voltaire

Look wise, say nothing, and grunt. Speech was given to conceal thought.
William Osler

Neither a wise man nor a brave man lies down on the tracks of history to wait for the train of the future to run over him.
Dwight D. Eisenhower

Be quick to learn and wise to know.
George Burns

A fool sees not the same tree that a wise man sees.
William Blake

The fool who persists in his folly will become wise.
William Blake

If the fool would persist in his folly he would become wise.
William Blake

The wise man does at once what the fool does finally.
Niccolo Machiavelli

A wise ruler ought never to keep faith when by doing so it would be against his interests.
Niccolo Machiavelli