Diversification is the only free lunch in finance.

The degree of slowness is directly proportional to the intensity of memory. The degree of speed is directly proportional to the intensity of forgetting.

在数学中，旅程和目的地同样重要；发现的过程才是真正学习的地方。

在统计工作中，正确的数学工具必须用于正确的问题，而且工具必须锋利。