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

On progress: "If you're competitor-focused， you have to wait until there is a competitor doing something. Being customer-focused allows you to be more pioneering."

所有星期一、泪日、哀号日、重击日、恐惧日、破碎日。

勤奋战胜贫穷，谨慎避免祸患，小心防止侵害，警惕免遭灾难。点评：《易经》曾言「君子终日乾乾，夕惕若。厉，无咎。」君子不仅整日自强不息、勤奋谨慎，而且到了晚上也心存警惕。如此这般，才能免除灾祸，事业得以顺利发展。