"I do not know whether then or at any other time so short a book ever instantly produced so wide and so important an effect on contemporary thought as did Mill's On Liberty in that day of intellectual and social fermentation (1859)... Mill believed that no symmetry, no uniformity of custom and convention, but bold, free expansion in every field, was demanded by all the needs of human life, and the best instincts of the modern mind... The little volume belongs to the rare books that after hostile criticism has done its best are still found to have somehow added a cubit to man's stature... [It] is a restatement and new reinforcement of Tolerance, discussion without restriction, the free life of the individual, so long as he does not injure other people, fair play for social experiment. On all this nothing could be more bracing than Mill's handling of his lofty case, and the idealism of it, the enthusiasm, sustained as it was for page after page, very nearly approached the electrifying region of the poetic, in the eyes of ardent men and women in our age."