骑士精神的格言也是智慧的格言：为所有人服务，但只爱一个人。
The motto of chivalry is also the motto of wisdom; to serve all, but love only one.
可持续性还不够——我们需要再生。
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.
Change starts with a single step, but it requires persistence to reach the destination.