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

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

Out of suffering have emerged the strongest souls; the most massive characters are seared with scars.

You laugh at me because I'm different, I laugh at you because you're all the same.

Good means not merely not to do wrong, but rather not to desire to do wrong.

The only real mistake is the one from which we learn nothing.

A man who as a physical being is always turned toward the outside, thinking that his happiness lies outside him, finally turns inward and discovers that the source is within him.

Throw your heart over the fence and the rest will follow.

To live is not merely to breathe; it is to act; it is to make use of our organs, senses, faculties - of all those parts of ourselves which give us the feeling of existence

Bitterness is like cancer. It eats upon the host. But anger is like fire. It burns it all clean.

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

Your reputation is in the hands of others. That's what the reputation is. You can't control that. The only thing you can control is your character.

Creativity is the process of having original ideas that have value.

The wise man should restrain his senses like the crane and accomplish his purpose with due knowledge of his place, time and ability.

There is a wisdom of the head, and... there is a wisdom of the heart.

Moderation in temper is always a virtue; but moderation in principle is always a vice.

Men are not prisoners of fate, but only prisoners of their own minds.

Act as if the maxim of your action were to become through your will a general natural law

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

A friend to all is a friend to none

Nobody made a greater mistake than he who did nothing because he could do only a little.