解释：在人活动范围内的水就污浊，在野外无人地方的水就清洁。同为一样的水，都是从天边开源，有的混浊有的清洁，这是它们所处环境使它们这样的。

The mystery of reality is what keeps me painting.

A mathematician's work is mostly a solitary pursuit, but it builds on the work of many others.

The human heart is like the sea: it has its storms, its tides, and its depths; in it, too, there are pearls.

最重要的是保护资本。不在于你赚了多少，而在于你少亏了多少。