It is a historical book. If there is one among the leaders of thought in England who, by the elevation of his character and the calm composure of his mind, deserved the so often misplaced title of Serene Highness, it was, I think, John Stuart Mill. But in his Essay 'On Liberty', Mill for once becomes passionate. In presenting his Bill of Rights, in stepping forward as the champion of individual liberty, he seems to be possessed by a new spirit. He speaks like a martyr, or the defender of martyrs. The individual human soul, with its unfathomable endowments, and its capacity of growing to something undreamt of in our philosophy, becomes in his eyes a sacred thing, and every encroachment on its world-wide domain is treated as sacrilege. Society, the arch-enemy of the rights of individuality, is represented like an evil spirit, whom it behooves every true man to resist with might and main, and whose demands, as they cannot be altogether ignored, must be reduced at all hazards to the lowest level.