Real suffering does not come from outside, but from how we understand it.
君子不以水为镜,而以人为镜。以水为镜,只能看到面容;以人为镜,可以知道吉凶。
数学的力量在于它的抽象性,使我们能够看到不立即显现的模式和联系。
The most beautiful arrangement is a pile of things poured out at random.