more on his guard against pharisaic censoriousness, and that desire to be ever judging one another, which Milton well called the stronghold of our hypocrisy. The disapproval of such a person would have an austere colour, a gravity, a self-respecting reserve, which could never belong to an equal degree of disapproval in a person who had started from the officious principle, that if we are sure we are right, it is straightway our business to make the person whom we think wrong smart for his error. And in the same way such disapproval would be much more impressive to the person whom it affected. If it was justified, he would be like a froward child who is always less effectively reformed--if reformable at all--by angry chidings and passionate punishments than by the sight of a cool and austere displeasure which lets him persist in his frowardness if he chooses. The second weak point in the doctrine lies in the extreme vagueness of the terms, protective and self-regarding. The practical difficulty begins with the definition of these terms. Can any opinion, or any serious part of conduct, be looked upon as truly and exclusively self-regarding? This central ingredient in the discussion seems insufficiently laboured in the essay on Liberty. Yet it is here more than anywhere else that controversy is needed to clear up what is in just as much need of elucidation, whatever view we may take of the inherent virtue of freedom--whether we look on freedom as a mere negation, or as one of the most powerful positive conditions of attaining the highest kind of human excellence.