I have been interested in phenomena involving complexity, diversity and evolution since I was a young boy.

Enthusiasm is followed by disappointment and even depression, and then by renewed enthusiasm.

Modern education is like being taken to the world's greatest restaurant & being forced to eat the menu.

The world of the quark has everything to do with a jaguar circling in the night.

If someone says that he can think or talk about quantum physics without becoming dizzy, that shows only that he has not understood anything whatever about it.

Sustainability is living on nature's income rather than living on its capital.

Everything that is not forbidden is compulsory.

Niels Bohr brainwashed a whole generation of theorists into thinking that the job (interpreting quantum theory) was done 50 years ago.

You know, there was a time, just before I started to study physical science, when astronomers thought that systems such as we have here in the solar system required a rare triple collision of stars

Both biological and cultural diversity are now severely threatened and working for their preservation is a critical task.

I would recommend that skeptics devote even more effort than they do now to understanding the reasons why so many people want or need to believe.

You already have the most important tool which is work

I appreciate your thinking on me, marshal, but ain’t no trouble of his what ain’t trouble of mine, too.

Everyone's crazy, but few show it.

Oxygen flooded into the atmosphere as a pollutant, even a poison, until natural selection shaped living things to thrive on the stuff and, indeed, suffocate without it.

Readers are made by readers - it is so obvious it is almost banal to say it.

Never exaggerate. Never say more than you really mean.

Your soul should be as strong as possible when it leaves here for whatever comes next.

I found that a bit unfair. However, I did feel quite liberated when I left. I'm very grateful to the show - it revived a flagging career, but I'm glad to be away from it now.

It is by doing anything that we become anyone

What do you call an economist with a prediction? Wrong.