We live at a time when emotions and feelings count more than truth, and there is a vast ignorance of science

This programme to stop nuclear by 2020 is just crazy. If there were a nuclear war, and humanity were wiped out, the Earth would breathe a sigh of relief.

We'd never have got a chance to go outside and look at the earth if it hadn't been for space exploration and NASA.

I've got personal views on the '60s. You can't have freedom without paying the price for it.

No one who has experienced the intense involvement of computer modeling would deny that the temptation exists to use any data input that will enable one to continue playing what is perhaps the ultimate game of solitaire.

You mustn't take what I say as gospel because no one can second-guess the future.

There is little evidence that our individual intelligence has improved through recorded history.