We are the products of editing, rather than of authorship.

Death seems to have been a rather late invention in evolution. One can go a long way in evolution before encountering an authentic corpse.

A scientist should be the happiest of men. Not that science isn't serious; but as everyone knows, being serious is one way of being happy, just as being gay is one way of being unhappy.

There is nothing worth having that can he obtained by nuclear war - nothing material or ideological - no tradition that it can defend. It is utterly self-defeating.

The only point of government is to safeguard and foster life.

Not all living creatures die. An amoeba, for example, need never die; it need not even, like certain generals, fade away. It just divides and becomes two new amoebas.

There's life all over this universe, but the only life in the solar system is on earth, and in the whole universe we are the only men.