追求任何职业或使命的代价是对其丑陋面的深入了解。

一切都同样不确定。

改变的秘诀在于集中所有精力，不是对抗过去，而是建设未来。

You cannot always control what goes on outside. But you can always control what goes on inside.

There is only one good, which is knowledge, and one evil, which is ignorance.

The old believe everything, the middle-aged suspect everything, the young know everything.