Muddy water is best cleared by leaving it alone.

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

No one cares how much you know, until they know how much you care

If we do not lay out ourselves in the service of mankind whom should we serve?

Don't criticize what you can't understand.

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

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

It is not enough to have a good mind; the main thing is to use it well.

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

If you have no problems, then you have no clue to what is going.

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.

We never see ourselves as others see us.

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

Man is the only creature who refuses to be what he is.

There is an art, or rather a knack to flying. The knack lies in learning how to throw yourself at the ground and miss.

A person who spends more than he earns is a fool

At the center of your being you have the answer; you know who you are and you know what you want.

Knowledge speaks, but wisdom listens

Intellectuals solve problems, geniuses prevent them.

The path to success is to take massive, determined action.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.