Civilization will end within 15 or 30 years unless immediate action is taken against problems facing mankind.

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.

Dropping those atomic bombs on Hiroshima and Nagasaki was a war crime.

It would be a poor thing to be an atom in a universe without physicists, and physicists are made of atoms. A physicist is an atom's way of knowing about atoms.

A physicist is an atom's way of knowing about atoms.

I have lived much of my life among molecules. They are good company.

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

I do not want to believe in God. Therefore I choose to believe in that which I know is scientifically impossible, spontaneous generation leading to evolution.

All War Departments are now Defense Departments. This is all part of the doubletalk of our time. The aggressor is always on the other side.

I tell my students to try early in life to find an unattainable objective.

Nuclear weapons offer us nothing but a balance of terror, and a balance of terror is still terror.

It's when you take somebody's innocence that you also take their life.

When the ignorant have become numerous or powerful enough, they have been referred to by a special name. This names is 'the Wise'.

An eleven-year-old girl is many things, but she is not stupid.

I built my church on Easter services, Christmas Eve services, and Norman Vincent Peale.

Lift every voice and sing Till earth and heaven ring, Ring with the harmonies of Liberty. Let our rejoicing rise high as the listening skies; Let it resound loud as the rolling sea.

And yes, again, that was it exactly. A retyper and not a writer. A prodigy and not a genius.

People who achieve their goals do so with passion, planning, persistence and purpose.

Even the bravest men are frightened by sudden terrors.

Kids: they dance before they learn there is anything that isn't music.

I guess I've got a smart wife.