The mind is to be studied as an end in itself.
译文：因此，即使拥有中原的富饶，也比不上这座都城的无限繁华。
Wisdom comes from a deep understanding of life.
The artist must be free, even from himself.
最好的数学不仅仅是逻辑的；它是直观和创造性的，将严谨与想象力结合在一起。