Somebody told me I should put a pebble in my mouth to cure my stuttering. Well, I tried it, and during a scene I swallowed the pebble. That was the end of that.

It is not easy to imagine how little interested a scientist usually is in the work of any other, with the possible exception of the teacher who backs him or the student who honors him.

To reflect is to disturb one's thoughts.

Already at the origin of the species man was equal to what he was destined to become.

Science has made us gods even before we are worthy of being men.

There are certain moments when we might wish the future were built by men of the past.

It is sometimes important for science to know how to forget the things she is surest of.