最强者也不能总是强大得足以永远作主人，除非他能把力量转化为权利和服从的义务。

The brain has specialized networks for maintaining alertness, orienting to sensory events, and resolving conflict among responses.

处于逆境，思想要开拓放达，奋发图强；处于顺境，思想要警觉收敛，约束自身。