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

The more you see yourself as a product, the less you see yourself as a person.

技术在减少排放方面的作用再怎么强调也不为过。

美国农民是我们经济中唯一必须以零售价购买所需一切，以批发价出售所产一切，并支付双向运费的人。

意识的元素要通过实验手段来分离。