The key to having an interesting life is to always say "yes" to anything crazy.

The public knows that human beings are fallible. Only people blinded by ideology fall into the trap of believing in their own infallibility.

That's what I learned from World War II. Things are always more complicated than most people believe.

We have these amazing gifts of music and mathematics and painting and Olympic running. I mean, we're the animal that is best of all the animals at long-distance running. Why? It is quite amazing. Superfluous gifts you don't really need to survive.

For a physicist mathematics is not just a tool by means of which phenomena can be calculated, it is the main source of concepts and principles by means of which new theories can be created.

Unfortunately the global warming hysteria, as I see it, is driven by politics more than by science.

If you want to have a program for moving out into the universe, you have to think in centuries not in decades.