To live is the rarest thing in the world. Most people exist, that is all.
生活是世界上最罕见的事，大多数人只是存在而已。
People are curious. A few people are. They will be driven to find things out, even trivial things. They will put things together, knowing all along that they may be mistaken.
休士顿，鹰号已着陆于静海基地了。
一个好的理论物理学家必须能够计算一切，但什么都不理解。
每一个作用力总是有一个相等的反作用力与之对抗。