Greatness, in order to gain recognition, must all too often consent to ape greatness.
The nobility of a human being is strictly independent of that of his convictions.
We must watch over our modesty in the presence of those who cannot understand its grounds.
It is sometimes important for science to know how to forget the things she is surest of.
The ideal, without doubt, varies, but its enemies, alas, are always the same.
The least one can say of power is that a vocation for it is suspicious.