解析：善恶由心生，非由外物定。

The essence of investment management is the management of risks, not the management of returns.

在生活的洪流中，没有人是毫无烦恼的。

The best way to gain self-confidence is to do what you are afraid to do.

The past is never dead. It's not even past.

优化是在给定约束条件下做出最佳选择的艺术。