The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

The rules of survival never change, whether you’re in a desert or in an downtown street: you need to be hydrated, you need food, and you need shelter.

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

孔子说：“我不是天生就有学问的，只是个喜欢读书、勤奋敏捷地追求知识的人。”