Sustainability starts with the soil; if we don’t care for it, nothing else matters.

Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.

译文：思念那个人，就到了他的家乡;他的故乡还在，他的人已经逝去了。

我没有计划。我从来没有。我只是做当时感觉对的事情。

I don't need a reason to love. I just do.

Thank God, under our Constitution there was no connection between church and state.