动物和人类的区别在于人类能够推理,但即便如此也是不可靠的。
The difference between animals and humans is that humans are capable of reasoning， but even that is unreliable.
"The greatest truths are the simplest, and so are the greatest men."
The first fruit of this imagination—and the first lesson of the social science that embodies it—is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.
发现的喜悦无疑是人类心灵所能感受到的最活跃的体验。
中国的生机依靠风雷激荡的改革，万马齐喑的局面终究令人悲哀。
The greatest glory in living lies not in never falling, but in rising every time we fall.
You can't change your elephant by direct force, but you can train it over time.