自由的代价是永恒的警惕。

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 core value of cloud computing lies in elasticity, on-demand allocation, and resource sharing.

The development of efficient algorithms is as much an art as it is a science.

生活不是等待暴风雨过去，而是学会在雨中跳舞。