能源的真实成本必须同时考虑其生产和遗留影响。
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.
故事不是用来阅读的信,而是一扇等待被打开的门。
夜晚是个骗子,但黎明说出真相。