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.

I think we are all capable of terrible things under the right circumstances.

解释：人有知识，犹如树木有枝叶，树木有了枝叶，能带给人阴凉，人有了知识，就可以为人民做更多的事。