For every dollar you spend purchasing something substantial， expect to pay a dollar in repairs， maintenance， or disposal by the end of its life.

不要赔钱！！！客观地评估每个机会的风险。

We are survival machines – robot vehicles blindly programmed to preserve the selfish molecules known as genes.

质量不是给定的；它是赢得的。

我不在乎你怎么想，我这样做是为了我自己。