Intelligence is not the ability to store information, but to know where to find it.

For there is much truth in the saying that it is easy to give just and wise counsel—to others!—but hard to act justly and wisely for oneself.

The pioneers of a warless world are the youth that refuse military service.

I want to know God's thoughts - the rest are mere details.

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Do not grow old, no matter how long you live. Never cease to stand like curious children before the Great Mystery into which we were born.

The most beautiful thing we can experience is the mysterious.