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

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

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

There are no limitations to the mind except those we acknowledge.

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

Take care of the pieces well. The whole will take care of itself.

Wrong life cannot be lived rightly.

Jealousy is the tribute mediocrity pays to genius.

It is a wise man that does know the contented man is never poor, whilst the discontented man is never rich.

We may encounter many defeats but we must not be defeated.

Wisdom... comes not from age, but from education and learning.

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

To be wronged is nothing unless you continue to remember it.

If you would take, you must first give, this is the beginning of intelligence.

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

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

If you're happy, don't worry you'll get over it.

I don't know, I don't care, and it doesn't make any difference.

Every aquarium will eventually leak.

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

Respect yourself if you would have others respect you.