To teach mathematics is to inspire the next generation of thinkers and problem solvers.
教授数学是为了激励下一代的思考者和问题解决者。
"To live is to be in constant dialogue with death."
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.
你和我各有一个苹果，如果我们交换苹果的话，我们还是只有一个苹果。但当你和我各有一个想法，我们交换想法的话，我们就都有两个想法了。
翻译：强调了土地在农业生产中的基础性作用，是万物生长之根本。