Man is an animal that makes bargains: no other animal does this—no dog exchanges bones with another.
人是会讨价还价的动物：没有其他动物会这样做——没有狗会与另一只狗交换骨头。
I do not lack the courage to think a thought all the way through, and thus far I have encountered no thought that I have feared.
唯一的好是知识，唯一的恶是无知。
The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.