个体是唯一的现实。我们越是远离个体，走向关于智人的抽象概念，我们就越可能陷入错误。
The individual is the only reality. The further we move away from the individual toward abstract ideas about Homo sapiens, the more likely we are to fall into error.
The future of the world lies in the cities.
记忆是脆弱的，生命的空间如此短暂，转瞬即逝，我们永远无法看清事件之间的联系。
In mining, the real competition is often against the market's short-term mindset.