可持续性不再是可选项；它是农业未来的必需品。

你可以通过一个人的回答来判断他是否聪明。你可以通过一个人的问题来判断他是否明智。

The soul is a fire that darts its rays through all the senses; it is in this fire that existence consists.

Great leaders don't just manage resources; they create new markets.

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

The teacher should not teach as if he were pouring knowledge into an empty vessel, but rather as if he were lighting a fire.