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A knowledge of the forces that rule society, of the causes that have produced its upheavals, and of society's resources for promoting healthy progress has become of vital concern to our civilization.

了解统治社会的力量，了解引起社会动乱的原因，了解促进健康进步的社会资源，已成为我们文明极为关心的问题。

— Wilhelm Dilthey 狄尔泰