We must live together as brothers or perish together as fools.

It is hard to fight desire; but to control it is the sign of a reasonable man.

There are two educations. One should teach us how to make a living and the other how to live.

Not everything that can be counted counts, and not everything that counts can be counted.

True knowledge lies in knowing how to live.

Be realistic: Plan for a miracle

Man is not the creature of circumstances, Circumstances are the creatures of men.

Wrong life cannot be lived rightly.

Intelligence is the ability to adapt to change.

The only real laughter comes from despair.

Don't expect to build up the weak by pulling down the strong.

The pendulum of the mind oscillates between sense and nonsense, not between right and wrong.

Science is organized knowledge. Wisdom is organized life.

Judge a man by his questions rather than by his answers.

We never see ourselves as others see us.

Without courage, wisdom bears no fruit.

Words mean more than what is set down on paper. It takes the human voice to infuse them with deeper meaning.

Nature is pleased with simplicity. And nature is no dummy

Resist much. Obey little.

Almost every wise saying has an opposite one, no less wise, to balance it.

It is not the strength, but the duration, of great sentiments that makes great men.