Agriculture is the backbone of civilization, and we must treat it with the respect it deserves.

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.

心是指南针，但并不总指向北方。