True progress in agriculture is measured by health, not just yield.

The great powers are always searching for opportunities to gain power at the expense of their rivals, and they will use force if they think it will profit them.

Sustainability isn't a choice anymore—it's a responsibility we owe to future generations.

对习俗和法律的遵从很容易成为对谎言的掩饰，这种掩饰极为巧妙，令人无法察觉。它可以使我们逃避所有的批评，它甚至能够使我们欺骗自己，令我们相信自己是 显然正当的。但是无论他的正当性得到多少公众舆论或道德准则的支持，在内心深处、在普通人的意识层次之下，他仍听到一个低低的声音：“哪儿有点不正常”。

故事是一种无法用其他方式表达的东西的表达方式。