There are two ways of spreading light: to be the candle or the mirror that reflects it.

We cannot live only for ourselves. A thousand fibers connect us with our fellow men.

It doesn't matter who my father was; it matters who I remember he was.

He who knows that enough is enough will always have enough.

Many a trip continues long after movement in time and space has ceased.

Childhood is a short season.

The formula for success: rise early, work hard, strike oil.

I have never in my life learned anything from any man who agreed with me.

Each day is the scholar of yesterday.

No amount of experimentation can ever prove me right; a single experiment can prove me wrong.