If we continue to accumulate only power and not wisdom, we will surely destroy ourselves.

Somewhere, something incredible is waiting to be known.

It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

Imagination will often carry us to worlds that never were. But without it we go nowhere.

I don't want to believe. I want to know.

The absence of evidence is not the evidence of absence.

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

For small creatures such as we the vastness is bearable only through love.

You have to know the past to understand the present.

This whole goddam house stinks of ghosts. I don’t mind so much being haunted by a dead ghost, but I resent like hell being haunted by a half-dead one.

Cities really are mental conditions. Beijing is a nightmare. A constant nightmare.

It is a free market that makes monopolies impossible.

A frightened man is a beaten man.

Certainly, the poverty, the discrimination, the episodic unemployment could not but strike an inquiring youngster: why did these exist, and what could we do about them.

You don't smoke do you?" "No, why?" "They're afraid of fire." "Great, we're going to be eaten alive because neither of us smokes." I almost laughed. He sounded so thoroughly disgusted.

If you jot down every silly thought that pops into your mind, you will soon find out everything you most seriously believe.

Having the urge to write is one thing; acting on it is another.

Most people's historical perspective begins with the day of their birth.

Great coaches are visionaries. Great coaches instill, nurture, and encourage vision, then model and motivate surrender to it.