数学的本质不是把简单的事情复杂化，而是把复杂的事情简单化。

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

农业中的每一个挑战都是成长的机会——字面意义上。

"The present is just the past with a different disguise."

It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.