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.

结构之美在于其逻辑性。

"A great book is a great teacher."

美始于你决定做自己的那一刻。

If knowledge can create problems, it is not through ignorance that we can solve them.

我会试着修复你。