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。
Mathematics is not a spectator sport.
Success in farming comes from understanding nature, not fighting it.
The past is a foreign country; they do things differently there.
If you want to change the industry, start by changing your own practices.
You have to have confidence in your ability, and then be tough enough to follow through.