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

The difference between stupidity and genius is that genius has its limits.

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

Let him who would move the world first move himself.

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

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

A precedent embalms a principle.

If you only read the books that everyone else is reading, you can only think what everyone else is thinking.

Tell the truth. Sing with passion. Work with laughter. Love with heart. 'Cause that's all that matters in the end.

Anywhere you go in the world is what you make of it, not what you read in books.

Muddy water is best cleared by leaving it alone.

Obsession is the wellspring of genius and madness.

Work is the price which is paid for reputation.

Every intelligent individual wants to know what makes him tick, and yet is at once fascinated and frustrated by the fact that oneself is the most difficult of all things to know.

Doubt is the origin of wisdom

Not everything that can be counted counts, and not everything that counts can be counted.

Sometimes one creates a dynamic impression by saying something, and sometimes one creates as significant an impression by remaining silent.

Appearances often are deceiving.

Science has not yet taught us if madness is or is not the sublimity of the intelligence.

Loneliness adds beauty to life. It puts a special burn on sunsets and makes night air smell better.

There are two educations. One should teach us how to make a living and the other how to live.