打量别人的弱点很容易。打量自己的弱点很难，但却会给你更高的回报。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

农业中的每一个挑战都是创新的机会。

She's simply too strange. We can't relate to her, she speaks in a funny way, she comes from an odd place. So we can't relate to her, and when you can't relate to somebody, you don't envy them. The closer two people are -- in age, in background, in the process of identification -- the more there's a danger of envy, which is incidentally why none of you should ever go to a school reunion, because there is no stronger reference point than people one was at school with.

We must listen to the science—ignoring it will only lead to irreversible damage.

殖民地是一个新人类计划将被测试的地方，在那里一个无国界、无种族、无国家、无阶级、无性别、无宗教、无货币和无财产世界的梦想将被实现。