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教育的目的不是使年輕人在任何一門科學上都變得完美，而是要打開和培養他們的思維，使他們在將來學習任何科學時都能勝任。

The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.

I don't think about age. People who tell me I'm too old to do something, I just ignore them.

Follow your passion, it will lead you to your purpose.