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Mathematics is a living subject, constantly evolving and growing.

You better lose yourself in the music, the moment, you own it, you better never let it go.

The quality of an organization is determined by the quality of its systems.

In this business, by the time you realize you're in trouble, it's too late to save yourself. Unless you're running scared all the time, you're gone.

《三民主義·民權主義·第一講》（1924年3月9日）