The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

我不相信完美，我相信真实。

The more we learn of the true nature of non-human animals, especially those with complex brains and corresponding complex social behaviour, the more ethical concerns are raised regarding their use in the service of man—whether this be in entertainment, as ‘pets,’ for food, in research laboratories or any of the other uses to which we subject them.

Man is defined as a human being and a woman as a female — whenever she behaves as a human being she is said to imitate the male.

最好的交易者是那些能够适应不断变化的市场条件的人。