The best way to cheer yourself up is to try to cheer somebody else up.
A ship in port is safe, but that's not what ships are built for.
The true measure of a farmer's success is not just yield per acre, but the legacy left for future generations.
每一个数学问题都是一个等待解决的谜题,每一个解答都是向理解现实结构迈进的一步。
Innovation distinguishes between a leader and a follower.