人类最美丽和最丑陋的倾向都不是固定生物本性的一部分，而是创造人类的社会过程的结果。
The most beautiful as well as the most ugly inclinations of man are not part of a fixed biologically given nature, but result from the social process which creates man.
You can't just sit there and wait for people to give you that golden dream. You've got to get out there and make it happen for yourself.
书籍是飞机，是火车，是道路。它们是目的地，也是旅程。它们是家。
在探索宇宙的过程中，每一个被解答的问题都会引出更多的问题。
好奇心驱动科学，但道德必须引导它。
