No man has any natural authority over his fellow men.

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

Admiration is the daughter of ignorance.

All the great things are simple, and many can be expressed in a single word: freedom; justice; honor; duty; mercy; hope.

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

A house divided against itself cannot stand.

I believe that one defines oneself by reinvention. To not be like your parents. To not be like your friends. To be yourself. To cut yourself out of stone.

Tomorrow hopes we have learned something from yesterday.

Stubborn and ardent clinging to one's opinion is the best proof of stupidity.

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

The impossible could not have happened, therefore the impossible must be possible in spite of appearances.

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

The trouble with most of us is that we would rather be ruined by praise than saved by criticism.

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

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

Man's sensitivity to the little things and insensitivity to the greatest are the signs of a strange disorder.

The most certain sign of wisdom is cheerfulness.

The road of excess leads to the palace of wisdom.

Be sure you put your feet in the right place, then stand firm.

In the practice of tolerance, one's enemy is the best teacher.

Everything excellent is as difficult as it is rare.