The reason why new concepts in any branch of science are hard to grasp is always the same; contemporary scientists try to picture the new concept in terms of ideas which existed before.

There is no doubt that parts of the world are getting warmer, but the warming is not global.

The world is just - it's wonderful when you look at all the detail. It's just amazing.

If you don't have a nasty obituary you probably didn't matter.

As a working hypothesis to explain the riddle of our existence, I propose that our universe is the most interesting of all possible universes, and our fate as human beings is to make it so

If you start out with a tragic view of life, then anything since is just a bonus.

Technology without morality is barbarous; morality without technology is impotent.