Extraordinary observations require extraordinary evidence to make them believable..

A proclivity for science is embedded deeply within us, in all times, places, and cultures. It has been the means for our survival. It is our birthrig….

The Big Bang is our modern scientific creation myth. It comes from the same human need to solve the cosmological riddle [Where did the universe come ….

Nothing disturbs me more than the glorification of stupidity..

If we can't think for ourselves, if we're unwilling to question authority, then we're just putty in the hands of those in power. But if the citizens ….

The claim is also sometimes made that science is as arbitrary or irrational as all other claims to knowledge, or that reason itself is an illusion. A….

Across the sea of space, the stars are other suns..

Ask courageous questions. Do not be satisfied with superficial answers. Be open to wonder and at the same time subject all claims to knowledge, w….

Anything else you're interested in is not going to happen if you can't breathe the air and drink the water. Don't sit this one out. Do something. You….

In college, in the early 1950s, I began to learn a little about how science works, the secrets of its great success, how rigorous the standards of ev….

Perhaps, in retrospect, there would be little motivation even for malevolent extraterrestrials to attack the Earth; perhaps, after a preliminary surv….

The old appeals to racial, sexual and religious chauvinism to rabid nationalist fervor, are beginning not to work..

Even through your hardest days, remember we are all made of stardust..

When you look more generally at life on Earth, you find that it is all the same kind of life. There are not many different kinds; there's only one ki….

Science is based on experiment, on a willingness to challenge old dogma, on an openness to see the universe as it really is. Accordingly, science som….

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….

The truth may be puzzling. It may take some work to grapple with. It may be counterintuitive. It may contradict deeply held prejudices. It may not be….

Understanding is a kind of ecstasy.

I would suggest that science is, at least in my part, informed worship..

We can't help it. Life looks for life..

I set before you two ways: You can use your technology to destroy yourselves or to carry you to the planets and the stars. It's up to you..