无论他做什么，地球上的每个人在世界历史中都扮演着核心角色。而通常他并不知道这一点。

The art of leather crafting is a dialogue between the past and the future.

You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself.

Programmers are not to be measured by their ingenuity and their logic but by the completeness of their case analysis.

内省是唯一可以直接观察心灵的方法。