I decided that Europeans and Americans are like men and women: they understand each other worse, and it matters less, than either of them suppose.
“Perhaps the best motivation for going to Mars is political. It is obvious that no single nation currently has either the will or the resources to do it alone, but a consortium of nations and space agencies could achieve it within 20 years.”
“If you turn down work because you are frightened of getting typecast, you'll never do anything good.”