The man with a toothache thinks everyone happy whose teeth are sound. The poverty-stricken man makes the same mistake about the rich.

自由不仅仅是随心所欲的机会；也不仅仅是在既定选项之间选择的机会。自由首先是制定可用选择的机会，对它们进行辩论——然后，才是选择的机会。

To one who has faith, no explanation is necessary. To one without faith, no explanation is possible.

现实的定义变成了：能够给出等价复制的东西。

农业创新不仅仅是技术问题，更是思维方式的转变。