成本不是为了计算而存在的，而是为了被降低而存在的。

解释：闭目塞听，不去思考，不登高博览远望的人，和死人是一类的啊！

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

The universe is not only stranger than we imagine, it is stranger than we can imagine.

你停止尝试的那一刻，就是你开始死亡的那一刻。