We can lick gravity, but sometimes the paperwork is overwhelming.

Everything in space obeys the laws of physics. If you know these laws, and obey them, space will treat you kindly. And don't tell me man doesn't belong out there. Man belongs wherever he wants to go-and he'll do plenty well when he gets there.

I have learned to use the word impossible with the greatest caution.

Basic research is what I'm doing when I don't know what I'm doing.

I find it as difficult to understand a scientist who does not acknowledge the presence of a superior rationality behind the existence of the universe as it is to comprehend a theologian who would deny the advances of science. And there is certainly no scientific reason why God cannot retain the same position in our modern world that he held before we began probing his creation with telescope and cyclotron.