自由不止一种……自由去做和自由免于。在无政府状态的日子里，是自由去做。现在你被给予了自由免于。不要低估它。

The circular economy isn't coming - it's already here. The question is whether your business is ready.

杀死他的父亲然后奖赏他的儿子，与吃他的儿子然后再奖赏他的父亲有什么不同呢？ 

What is the difference between a Turing machine and the modern computer? It's the same as that between Hillary's ascent of Everest and the establishment of a Hilton hotel on its peak.