购买工具。从购买你能找到的最便宜的工具开始。升级你经常使用的工具。如果你在某项工作中最终选择使用了某种工具，就买你能负担得起的最好的。
Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.
It is better to be a human being dissatisfied than a pig satisfied； better to be Socrates dissatisfied than a fool satisfied.
The true cost of inequality is the potential that goes unrealized.
原始人与文明人在心智能力上的差异并不像通常认为的那样大。
When you lend somthing pretend you are gifting. If it is returned， you'll be surprised and happy
创新不仅仅是创造新事物，更是让事物变得更好。