The universe would look to a two-dimensional creature who spend its life moving on the service of what turned out to be a globe， it could travel for millions of years and would always return to its starting point， it would never be conscious of what was above it or beneath it.

最好的想法来自那些最接近问题的人。

世界上最可靠的就是你自己。

宇宙是一个庞大而复杂的系统，理解它需要理论洞察力和观测证据。