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科學應該彌合實驗室和實地之間的差距。

So much to do, so little done, such things to be.

And I hope you will come back here to Harvard 30 years from now and reflect on what you have done with your talent and your energy. I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities…on how well you treated people a world away who have nothing in common with you but their humanity.

Mental processes are tools for living, and their worth is in their use.