孔子说：“不到苦思冥想时，不去提醒；不到欲说无语时，不去引导。不能举一例能理解三个类似的问题，就不要再教他了。”

有些秘密是不能被说出口的。

What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.

在石油行业，效率和可持续性是同一枚硬币的两面。