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

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.

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

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.

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.

Every morning is my birthday and every night is my death-day.

Ironically, girls who don't think so much about their family and are a little bit self-centred are not only happier themselves but also maintain good relationships with their families.

As it almost always was when I'd been too self-centered to see the truth of the matter, I felt impossibly foolish.

Let us step into the night and pursue that flighty temptress, adventure.

The [tenth] amendment states but a truism that all is retained which has not been surrendered.

All I'm trying to do is not join my ancestral spirits just yet.

After the age of 50 we begin to die little by little in the deaths of others.

Think beyond your lifetime, if you want to do something truly great.

No yesterdays on the road.

Leisure is the most challenging responsibility a man can be offered.