He alone is free who lives with free consent under the entire guidance of reason.

Beauty is not in the face; beauty is a light in the heart.

The oldest, shortest words- 'yes' and 'no'- are those which require the most thought.

The only limit to our realization of tomorrow will be our doubts of today.

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

Never do anything when you are in a temper, for you will do everything wrong.

A person reveals his character by nothing so clearly as the joke he resents.

Wisdom begins at the end.

If you don't want to slip up tomorrow, speak the truth today.

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

The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?

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

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

Fear doesn't exist anywhere except in the mind.

All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.

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

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

I write with experiences in mind, but I don't write about them, I write out of them.

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

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

Nothing is more intolerable than to have to admit to yourself your own errors.