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The best way to make people happy is to make them laugh.

解析：良知是人天生具有的道德判斷力，致良知是修身治國(guó)平天下的根本。

人們并不懶惰。他們只是有無(wú)力的目標(biāo)——也就是說(shuō)，那些不能激勵(lì)他們的目標(biāo)。

The privilege of a lifetime is being who you are.

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.