The general will is always right， but the judgment which guides it is not always enlightened.

No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.

I am not a hero of mathematics. I'm not even that successful; that is why I don't want to have everybody looking at me.

The world is full of beauty, but it is also full of pain and suffering.