A married couple are well suited when both partners usually feel the need for a quarrel at the same time.

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

We must watch over our modesty in the presence of those who cannot understand its grounds.

Being right is less important to us than the freedom to be wrong.

A few great minds are enough to endow humanity with monstrous power, but a few great hearts are not enough to make us worthy of using it.

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.

There are moments when very little truth would be enough to shape opinion. One might be hated at extremely low cost.