Intelligence is a moral category.

Those who cannot work with their hearts achieve but a hollow, half-hearted success that breeds bitterness all around.

Don't criticize what you don't understand, son. You never walked in that man's shoes.

A mistake is always forgivable, rarely excusable and always unacceptable.

Only from the heart can you touch the sky.

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

Choose rather to be strong of soul than strong of body.

Promises are like crying babies in a theater, they should be carried out at once.

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

Every act of creation is first an act of destruction.

Don't raise your voice, improve your argument.

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

A perfection of means, and confusion of aims, seems to be our main problem.

It's not a question of learning much.On the contrary.It's a question of UNLEARNING much.

Immoderate desire is the mark of a child, not a man.

Those who know, do. Those that understand, teach.

Strength does not come from physical capacity. It comes from an indomitable will.

If you don't like someone's story, write your own.

Courage, above all things, is the first quality of a warrior.

The secret of life, though, is to fall seven times and to get up eight times.

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