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.
The mind is a set of information-processing machines that were designed by natural selection to solve adaptive problems faced by our hunter-gatherer ancestors.
思考就是雕塑。
"El terror no es solo lo sobrenatural, sino lo que los seres humanos somos capaces de hacernos unos a otros."
A person must go through hard work to achieve something.
每个数学问题都有一个解决方案；只是需要时间和创造力来找到它。
My fans are my family.