在数学中，你并不理解事物。你只是习惯了它们。
In mathematics, you don't understand things. You just get used to them.
Happy the man, and happy he alone, he who can call today his own.
Life's too short to hang out with people who aren't resourceful.
Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.
