Those who dance are considered insane by those who cannot hear the music.

Experience is the only prophecy of wise men.

Adapt what is useful, reject what is useless, and add what is specifically your own.

Be frank and explicit. That is the right line to take when you wish to conceal your own mind and to confuse the minds of others.

How often I found where I should be going only by setting out for somewhere else.

Mistakes are always forgivable, if one has the courage to admit them.

In anger we should refrain both from speech and action.

Don't raise your voice, improve your argument.

There are things known and there are things unknown, and in between are the doors of perception.

A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.

There is no question climate change is happening. The only arguable point is what part humans are playing in it.

Wisdom is not the product of schooling, but of the lifelong attempt to acquire it.

I've learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel.

Obsession is the wellspring of genius and madness.

The experience gathered from books, though often valuable,is but the nature of learning whereas the experience gained from actual life is of the nature of wisdom.

Yesterday is but today's memory and tomorrow is today's dream.

Having a great intellect is no path to being happy.

Man is the only creature who refuses to be what he is.

Gravity is only the bark of wisdom's tree; but it preserves it

Experience teaches us that it is much easier to prevent an enemy from posting themselves than it is to dislodge them after they have got possession.

It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt.