The real problem is not whether machines think but whether men do.

幸福不是现成的东西，它来自于你自己的行动。

写作是与世界联系的一种方式。

And let's be clear: It's not enough just to limit ads for foods that aren't healthy. It's also going to be critical to increase marketing for foods that are healthy.

农业中的每一个挑战都是重新定义我们如何养活世界的机会。