The world is a vast and lonely place. But it's also a place where you can find your own way.

It is indeed an opinion strangely prevailing amongst men， that houses， mountains， rivers， and in a word all sensible objects， have an existence， natural or real， distinct from their being perceived by the understanding.

过去是一个萦绕现在的幽灵，无论我们是否承认。

没有绝对的安全，只有相对的风险控制。

The worth of a mental process is in its service to life.