Humanities deepest desire for knowledge is justification enough for continuing our quest. and our goal is nothing less than a complete description of the universe we live in.

If the rate of expansion one second after the Big Bang had been smaller by even one part in a hundred thousand million million, it would have recollapsed before it reached its present size. On the other hand, if it had been greater by a part in a million, the universe would have expanded too rapidly for stars and planets to form.

It is not clear that intelligence has any long-term survival value.

Some people would claim that things like love, joy and beauty belong to a different category from science and can't be described in scientific terms, but I think they can now be explained by the theory of evolution.

I'm not afraid of death, but I'm in no hurry to die. I have so much I want to do first.

Government works best under the glare of public scrutiny. Absent such scrutiny, abuses occur.

The idea of 10 dimensions might sound exciting, but they would cause real problems if you forget where you parked your car.