An outlook through this peephole [that manned space flight had opened] at the vast mysteries of the universe should only confirm our belief in the certainty of its Creator. 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.

It takes sixty-five thousand errors before you are qualified to make a rocket.

'Once the rockets are up who cares where they come down that's not my department,' says Wernher von Braun.

With every new answer unfolded, science has consistently discovered at least three new questions.

The more I examine the universe and the details of its architecture, the more evidence I find that the universe in some sense must have known we were coming.

I think I have fairly heard and fairly weighed the evidence on both sides, and I remain an utter disbeliever in almost all that you consider the most sacred tr…

It is the modest, not the presumptuous, inquirer who makes a real and safe progress in the discovery of divine truths. One follows Nature and Nature's God; tha…