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

Those who can not change their minds can not change anything.

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

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

Good advice is always certain to be ignored, but that's no reason not to give it.

I have no desire to make windows into mens souls

Intellectuals solve problems, geniuses prevent them.

Experience keeps a dear school, but fools will learn in no other.

Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.

If you have no problems, then you have no clue to what is going.

The most courageous act is still to think for yourself. Aloud.

An intelligent hell would be better than a stupid paradise.

By three methods we may learn wisdom: first, by reflection which is noblest; second, by imitation, which is the easiest; and third, by experience, which is the bitterest.

We seldom realize, for example that our most private thoughts and emotions are not actually our own. For we think in terms of languages and images which we did not invent, but which were given to us by our society.

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

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

Every intelligent individual wants to know what makes him tick, and yet is at once fascinated and frustrated by the fact that oneself is the most difficult of all things to know.

Madame, all stories, if continued far enough, end in death, and he is no true-story teller who would keep that from you.

A house is not a home unless it contains food and fire for the mind as well as the body.

The best revenge is to be unlike him who performed the injury.

The ultimate authority must always rest with the individual's own reason and critical analysis.