最成功的产品往往是解决日常问题的最简单方案。
The most successful products are often the simplest solutions to everyday problems.
You can obsess about serving your customers/audience/clients， or you can obsess about beating the competition. Both work， but of the two， obsessing about your customers will take you further.
林业中的短期收益往往会导致长期痛苦。
让你难过的事情，有一天，你一定会笑着说出来。
凡是圣人制造的这些东西，无一不是有益于实用才去做的，所以使用财物不浪费，民众能够不劳苦，他兴起的利益太多了。
A man, as a general rule, owes very little to what he is born with – a man is what he makes of himself.
The world is a place of the living, and the dead have no place in it. The dead are nothing.