All this worldly wisdom was once the unamiable heresy of some wise man.
Henry David Thoreau

I have always been regretting that I was not as wise as the day I was born.
Henry David Thoreau

He who knows others is wise. He who knows himself is enlightened.
Lao Tzu

The wise man does not lay up his own treasures. The more he gives to others, the more he has for his own.
Lao Tzu

For the wise man looks into space and he knows there is no limited dimensions.
Lao Tzu

The wise man does not expose himself needlessly to danger, since there are few things for which he cares sufficiently; but he is willing, in great crises, to give even his life - knowing that under certain conditions it is not worthwhile to live.
Aristotle

Let us raise a standard to which the wise and honest can repair; the rest is in the hands of God.
George Washington

Nine-tenths of wisdom is being wise in time.
Theodore Roosevelt

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

A hero is born among a hundred, a wise man is found among a thousand, but an accomplished one might not be found even among a hundred thousand men.
Plato

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

Love is the joy of the good, the wonder of the wise, the amazement of the Gods.
Plato

He was a wise man who invented beer.
Plato

Wise men speak because they have something to say; Fools because they have to say something.
Plato

We ought to fly away from earth to heaven as quickly as we can; and to fly away is to become like God, as far as this is possible; and to become like him is to become holy, just, and wise.
Plato

The punishment which the wise suffer who refuse to take part in the government, is to live under the government of worse men.
Plato

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

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