I think the best thing a parent can do, when raising a child, is simply get out of their way.

To achieve this density of a neutron star at home, just cram a herd of 50 million elephants into the volume of a thimble.

I'm often asked whether I believe in Global Warming. I now just reply with the question: "Do you believe in Gravity?"

I remain unconvinced that anything other than rapid decomposition is the fate of my body and mind after death.

Some claim evolution is just a theory. As if it were merely an opinion. The theory of evolution, like the theory of gravity, is a scientific fact. Evolution really happened. Accepting our kinship with all life on Earth is not only solid science. In my view, it’s also a soaring spiritual experience.

There is a growing awareness that we're losing our technological competitive edge. I think there's an awareness that we're losing our leadership, and that maybe our self image over the past several decades has been a little bit delusional.

There's the anti-intellectual movement in society and I don't blame them entirely for feeling that way because we all know people, I have many colleagues where you try to hang out with them and they make you feel bad for not knowing what they know. If that's how you interact with people, why would anyone want to be that.