The noblest pleasure is the joy of understanding.

Don't expect to build up the weak by pulling down the strong.

Out of suffering have emerged the strongest souls; the most massive characters are seared with scars.

You are not a drop in the ocean. You are the entire ocean, in a drop.

Intellectuals solve problems, geniuses prevent them.

No man has any natural authority over his fellow men.

If we know exactly where we're going, exactly how to get there, and exactly what we'll see along the way, we won't learn anything.

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

A single lie destroys a whole reputation of integrity.

Each problem that I solved became a rule which served afterwards to solve other problems.

Desire is poverty. Desire is the greatest impurity of the mind. Desire is the motive force for action. Desire in the mind is the real impurity. Even a spark of desire is a very great evil.

Only idiots refuse to change their minds.

Creativity is the greatest rebellion in existence.

Moderation in temper is always a virtue; but moderation in principle is always a vice.

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

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

Great acts are made up of small deeds.

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

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

We learn from our gardens to deal with the most urgent question of the time: How much is enough?

Convictions are more dangerous enemies of truth than lies.