The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
情感是心理过程的主观方面。
2006年:贝索斯致股东信《选择新业务时,亚马逊的经验》
The only thing that can save the world is the rediscovery of the human soul.
节俭:只为对人对己有益的事情买单,即不要浪费。