WhenIWasYourAge: It took a week to learn whether your photos came out okay.

My interest in the space program has a certain purity to it because I recognize the romance of it but I was never seduced by it. That allowed me to view it through a more purely scientific lens. My interest in space while in school came about through my scientific activities.

I know of no time in human history where ignorance was better than knowledge.

My view is that if your philosophy is not unsettled daily then you are blind to all the universe has to offer.

Chimpanzees are an evolutionary hair's-width from us.... Now imagine a species on Earth, or anywhere else, as smart compared with humans as humans are compared with chimpanzees. How much of the universe might they figure out?

It is astonishing to realize that until Galileo performed his experiments on the acceleration of gravity in the early seventeenth century, nobody questioned Aristotle's falling balls. Nobody said, Show Me!

I think if everyone had the luxury to pursue a life of exactly what they love, we would all be ranked as visionaries and brilliant.