When a man must be afraid to drink freely from his country's river and streams that country is no longer fit to live in.

Married couples who quarrel bitterly every day may really need each other as deeply as those who appear to be desperately in love.

Once upon a time, I dreamed of becoming a great man. Later, a good man. Now, finally, I find it difficult enough and honor enough to be -- a man.

The idea of wilderness needs no defense, it only needs defenders.

Most academic economists know nothing of economy. In fact, they know little of anything.

Climbing K2 or floating the Grand Canyon in an inner tube; there are some things one would rather have done than do.

Quantum mechanics provides us with an approximate, plausible, conjectural explanation of what actually is, or was, or may be taking place inside a cyclotron during a dark night in February.