I'm fulfilled in what I do. I never thought that a lot of money or fine clothes - the finer things of life - would make you happy. My concept of happiness is to be filled in a spiritual sense.
“Darwinism is not merely a support for naturalistic philosophy: it is a product of naturalistic philosophy.”
“We must always emphasize research and development of science and mathematics, and I can think of no better way to achieve this than through our future in space.”