Representation of the world, like the world itself, is the work of men; they describe it from their own point of view, which they confuse with the absolute truth.
Never be the brightest person in the room; if you are, you're in the wrong room.
I would not dare to say that there is a direct relation between mathematics and madness, but there is no doubt that great mathematicians suffer from maniacal characteristics.
如果不给儿童提供帮助，如果忽视他的环境，那他的精神生命将会处于持续的危险之中。