"There is a world of difference between the love we feel for a wild creature and the love we feel for a human being."

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.

万物纷繁各自返回根本，返回根本复归生命就能长存。

单靠技术无法解决饥饿问题，必须与公平获取和教育相结合。

生命太短暂，不要在早晨醒来时带着遗憾。