Mistakes are always forgivable, if one has the courage to admit them.

Great dreams of great dreamers are always transcended.

Obsession is the wellspring of genius and madness.

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

Unfortunately, the clock is ticking, the hours are going by. The past increases, the future recedes. Possibilities decreasing, regrets mounting.

Drop the idea that you are Atlas carrying the world on your shoulders. The world would go on even without you. Don't take yourself so seriously.

The best revenge is to be unlike him who performed the injury.

There is a wisdom of the head, and... there is a wisdom of the heart.

When you undervalue what you do, the world will undervalue who you are

I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.

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

Where you stand depends on where you sit.

To do great things is difficult, but to command great things is more difficult.

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

The wise man should restrain his senses like the crane and accomplish his purpose with due knowledge of his place, time and ability.

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

You can be rich in spirit, kindness, love and all those things that you can't put a dollar sign on.

It takes a great man to be a good listener.

Every aquarium will eventually leak.

Wonder is the beginning of wisdom.

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