An important fact about verbal behavior is that speaker and listener may reside within the same skin.

It is not a question of starting. The start has been made. It's a question of what's to be done from now on.

We are only just beginning to understand the power of love because we are just beginning to understand the weakness of force and aggression.

I've often said that my rats have taught me much more than I've taught them.

The problem of far greater importance remains to be solved. Rather than build a world in which we shall all live well, we must stop building one in which it will be impossible to live at all.

The world's a poor standard. any society which is free of hunger and violence looks bright against that background.

I don't believe in God, so I'm not afraid of dying.