I'm not religious, but I put it that way because I feel so strongly. It's the one thing you do not ever do. You've got to have standards.

The inertia of humans is so huge that you can't really do anything meaningful.

If it hadn't been for the Cold War, neither Russia nor America would have been sending people into space.

The world has not warmed up very much since the millennium. Twelve years is a reasonable time... it (the temperature) has stayed almost constant, whereas it should have been rising - carbon dioxide is rising, no question about that.

You never know with politicians what they are really saying. And I don't say that in a negative way-they have an appalling job.

Our future is like that of the passengers on a small pleasure boat sailing quietly above the Niagara Falls, not knowing that the engines are about to fail.

Nature favors those organisms which leave the environment in better shape for their progeny to survive.