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.
I am happy and proud of what I have done， but not completely satisfied.
The biggest risk is not taking any risk. In a world that’s changing quickly, the only strategy that is guaranteed to fail is not taking risks.
无人机的未来不是替代人，而是帮助人更好地完成工作。
Pride is the universal sin, the great vice.
