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

It is sometimes well for a blatant error to draw attention to overmodest truths.

There are things that don't deserve to be said briefly.

We are not naïve enough to ask for pure men; we ask merely for men whose impurity does not conflict with the obligations of their job.

It takes a very deep-rooted opinion to survive unexpressed.

One kills a man, one is an assassin; one kills millions, one is a conqueror; one kills everybody, one is a god.

We spend our time envying people whom we wouldn't wish to be.