The world has the technology - either available or well advanced in the research pipeline - to feed on a sustainable basis a population of 10 billion people.

Our frustration is greater when we have much and want more than when we have nothing and want some. We are less dissatisfied when we lack many things than when we seem to lack but one thing.

我们对显而易见的事物视而不见，而且对自己的视而不见也视而不见。

二十年后，你会懊悔更多的是那些现在没做，而不是真的做了的事。所以，抛开绳结，驶离安全的港湾。掌握好你的风向，勇敢的探险，梦想，发现吧。

文化进化不是线性进展，而是适应和变化的复杂网络。