宇宙是一个相当大的地方。如果只有我们，那似乎是对空间的极大浪费。
The universe is a pretty big place. If it's just us, seems like an awful waste of space.
We are all just walking each other home.
可持续性不仅仅是一个选择；这是我们对后代的责任。
"The more you try to understand, the less you know."
真相很少纯粹，也绝不简单。
The only limit to our realization of tomorrow is our doubts of today.