Early in my school career, I turned out to be an incorrigible disciplinary problem. I could understand what the teacher was saying as fast as she could say it, I found time hanging heavy, so I would occasionally talk to my neighbor. That was my great crime, I talked in school.

Science can amuse and fascinate us all, but it is engineering that changes the world.

The whole world might know you and acclaim you, but someone in the past, forever unreachable, forever unknowing, spoils it all.

Humanity has the stars in its future, and that future is too important to be lost under the burden of juvenile folly and ignorant superstition.

Politically popular speech has always been protected: even the Jews were free to say ‘Heil Hitler.’

Naturally, there's got to be a limit for I don't expect to live forever, but I do intend to hang on as long as possible.

Properly read, the Bible is the most potent force for atheism ever conceived.