translation.en: And that is, instinctively we've gone out and climbed over difficult places, went to more hostile places, and found out later, maybe to our surprise, that that's the reason we survived.
translation.zh: 那就是，我们已经本能地走出去 翻过困难之地，去往更加困难的地方， 之后发现，也许会令我们吃惊，这些就是我们生存下来的理由。