“In another couple centuries I’m sure that worldview won’t even exist. There’s no evidence for it.”

If you just take a single human and put him or her in the forest he or she might not do very well without some sort of education which he got or she got from some tribe.

When we see the shadow on our images, are we seeing the time 11 minutes ago on Mars? Or are we seeing the time on Mars as observed from Earth now? It’s like time travel problems in science fiction. When is now; when was then?

Winter lingered so long in the lap of Spring that it occasioned a great deal of talk.

Our goal in science is to discover universal laws of nature. That pursuit fills me with wonder.

The strange thing about grinding that might surprise many people is that you can grind things and shape them using materials that are generally somewhat softer than the thing you’re grinding and shaping.

The most serious problem facing humankind is climate change. All of these people breathing and burning our atmosphere has led to an extraordinarily dangerous situation.

It fills me with joy to know that we can pursue these answers. It is an astonishing thing that we are — you and I are one of the ways the universe knows itself.

Unlike science, creationism cannot predict anything, and it cannot provide satisfactory answers about the past.

People get a lot out of being religious. They have strong senses of community and mutual support. So, what’s not to love [there]?

Think how fortunate we are to know this much. But think also of all that’s yet to be discovered. Here’s hoping the deep answers to the deep questions-from the nature of consciousness to the origin of life-will be found in not too much more time.

Apparently there is redundancy in memory: You store the same memory in different parts of your brain for accessing at different speeds. That speed would depend on the frequency of use and the importance of the knowledge.

There’s nothing I believe in more strongly than getting young people interested in science and engineering, for a better tomorrow, for all humankind.

Religion is a completely different thing from the claim that the Earth is six thousand years old. That’s just crazy.

Speaking of human computers, there is a guy named Art Benjamin, he’s a human calculator. He says it’s a skill he learned as a kid. Now he’s a math professor at Harvey Mudd. He can find the square root of a six digit number in a few seconds. Practice.

I abandoned my religious teachings after I read the Bible twice – cover to cover. It took me a couple of years.

If the Earth gets hit by an asteroid, it’s game over. It’s control-alt-delete for civilization.

The day science begins to study non-physical phenomena, it will make more progress in one decade than in all the previous centuries of its existence.

As history has also shown, especially in the twentieth century, one of the first things an ideologue will do after achieving absolute power is kill.

In the twenty-first century, the robot will take the place which slave labor occupied in ancient civilization.

Books are like seeds. They can lie dormant for centuries and then flower in the most unpromising soil.

I fully expected that, by the end of the century, we would have achieved substantially more than we actually did.

Women have served all these centuries as looking glasses possessing the power of reflecting the figure of man at twice its natural size.

To stop war by the perfection of engines of destruction alone, might consume centuries and centuries. Other means must be employed to hasten the end.

A century from now it will no more occur to a normal person to mate with a person eugenically unfit than to marry a habitual criminal.