I will hazard a prediction. When you are 80 years old， and in a quiet moment of reflection narrating for only yourself the most personal version of your life story， the telling that will be most compact and meaningful will be the series of choices you have made. In the end， we are our choices. Build yourself a great story.

失败是有教益的。真正思考的人从失败中学到的东西和从成功中学到的一样多。

世界上没有任何力量能够粉碎真理和思想的力量。