I don't judge a regime by the damning criticism of the opposition, but by the ingenuous praise of the partisan.

God, that checkroom of our dreams.

We bestow on others praise in which we do not believe, on condition that in return they bestow upon us praise in which we do.

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

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.

Think? Why think! We have computers to do that for us.

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