Loneliness is the price we pay for being born.

真相很少纯粹，也绝不简单。

Every story has a beginning, a middle, and an end, but not necessarily in that order.

The best ideas often come from listening to those closest to the problem.

系统辨识是从观测到的输入输出数据中建立动态系统数学模型的科学与艺术。