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.

只要人类继续无情地摧毁较低级的生命，他们永远不会知道健康和和平。因为只要人类屠杀动物，他们也会相互杀戮。

There is no greater tyranny than that which is perpetrated under the shield of the law and in the name of justice.

Productivity metrics that ignore environmental impact are accounting tricks, not real progress.