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.
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。
在某种程度上独立于男性之前，期待女性有美德是徒劳的。
The key to artificial intelligence is the representation of knowledge.
字符串是一个严格的数据结构，在传递字符串的任何地方都存在很多重复的过程。它是隐藏信息的理想工具。
The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.