电影K星异客中有一段非常有哲理的话，这段对宇宙的思考让人细思极恐！

I want to tell you something, Mark, something you do not yet know, but we K-PAXians have been around long enough to have discovered. The universe will expand, then it will collapse back on itself, and then it will expand again. It will repeat this process forever. What you don’t know is that when the universe expand again, everything will be as it is now. Whatever mistakes you make this time around, you will live through on your next pass. Every mistake you make you will live through, again and again... forever. 

如果把宇宙大爆炸看成是一个简谐振动的话， 那么人将会有来世，并且和今生完全一样，重点是“和今生完全一样”！

当然，这段思考的目的是为了引出一个非常积极的人生建议：

So my advice to you is to get it right this time around. Because this time is all you have.

——电影K-PAX