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

Only idiots refuse to change their minds.

Do not pray for an easy life, pray for the strength to endure a difficult one.

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

The lie is a condition of life.

Words mean more than what is set down on paper. It takes the human voice to infuse them with deeper meaning.

He who conquers others is strong; he who conquers himself is mighty.

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

Every act of creation is first an act of destruction.

Love one another, but make not a bond of love: Let it rather be a moving sea between the shores of your souls.

You don't become what you want, you become what you believe

You can best serve civilization by being against what usually passes for it.

Sometimes you will never know the value of a moment until it becomes a memory.

Accuracy is the twin brother of honesty; inaccuracy, of dishonesty.

Do not say a little in many words, but a great deal in few!

A crust eaten in peace is better than a banquet partaken in anxiety.

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

The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.

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

What can't be cured must be endured.

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