反水不收，后悔无及。
释义：水一旦泼出去，就收不回来，后悔也来不及。
The world is full of stories, but the stories are all one.
The environment will appear different to different observers depending on what they are prepared to see.
The universe is comprehensible because it is governed by laws that we can understand.
To understand behavior, look for the utility in it.