Houston, Tranquility Base here. The eagle has landed.

I believe every human has a finite number of heartbeats. I don't intend to waste any of mine

I hope you become comfortable with the use of logic without being deceived into concluding that logic will inevitably lead you to the correct conclusion.

It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn't feel like a gia ...

Mystery creates wonder and wonder is the basis of man's desire to understand.

That's one small step for [a] man, one giant leap for mankind.