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I stand up for what I believe in, and I don’t worry about what others think.

People don't buy what you do; they buy why you do it.

The only way to do great work is to love what you do.

禮義廉恥，可以用來要求自己，不可用來要求別人。要求自己則能少犯過失，要求別人則難以與人和睦相處，難以與他人相處就不合乎處世之道。所以君子只嚴格要求自己，小人則對別人求全責備。

The greatest tragedy of humanity is not death, but the loss of dignity.

位置測量越精確，動量測量就越不精確，反之亦然。