自然权利...是每个人拥有的自由，按照自己的意愿使用自己的力量，以保护自己的本性；也就是说，保护自己的生命。
The right of nature... is the liberty each man hath, to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his own life.
Most of us don't listen with the intent to understand. We listen with the intent to reply.
Sustainability must be profitable, or it won't be sustainable—this is the challenge we must solve in modern farming.《The Grain Frontier》
预测未来的最好方法就是创造未来。
Every mental state exists for a purpose; to understand it, we must ask what function it serves in the broader system of behavior.
在这个行业里，你必须大胆，但绝不能鲁莽。
The only way to learn mathematics is to do mathematics.
体育必须是全人类和各社会阶层的共同遗产。