we can go back to the cave if you like.

Well, the first rule is that you can’t really know anything if you just remember isolated facts and try and bang ’em back. If the facts don’t hang together on a latticework of theory, you don’t have them in a usable form.

Leadership in agriculture means listening—to the land, the science, and the people who work it.

人需要三项很重要的能力：坚持不放弃直至成功的能力，能够放弃不对的事情的能力，以及能够信任他人来帮助你鉴别以上两种情况的能力。

Every age has its massive moral blind spots. We might not see them, but our children will.