It matters little whether a man be mathematically or philologically or artistically cultivated, so he be but cultivated.

He who does not know foreign languages does not know anything about his own.

I am part of the part that once was everything, Part of the darkness which gave birth to light… Mephistopheles, from Faust.

The century is advanced, but every individual begins afresh.

The new vulcanism is really a daring attempt to connect the present, incomprehensible world to a past, unknown one.

When you are in conflict with someone, there is one factor that can make the difference between damaging your relationship and deepening it. That factor is attitude. We don't get to know people when they come to us; we must go to them to find out what they are like.

I have heard myself accused of being an opponent, an enemy of mathematics, which no one can value more highly than I, for it accomplishes the very thing whose achievement has been denied me.