Any human scheme for society is realised only when the great mass of humanity has become adapted to it; but this adaptation becomes also, insensibly, an adaptation of the scheme itself to the mass on which it operates: the overwhelming pressure of mediocrity, sluggish and indomitable as a glacier, will mitigate the most violent, and depress the most exalted revolution, and what is realised is so unlike the end that enthusiasm conceived, that foresight would weaken the effort.