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People don’t notice whether it’s winter or summer when they’re happy.

Happiness is like a butterfly; the more you chase it, the more it will elude you. But if you turn your attention to other things, it will come and sit softly on your shoulder.

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

數學的統一性不是強加的，而是被發現的。