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, is a reality and is valuable. The argument will not appeal to any one who holds with Cardinal Newman that "our race's progress and perfectibility is a dream, because revelation contradicts it"; and he may consistently subscribe to the same writer's conviction that "it would be a gain to this country were it vastly more superstitious, more bigoted, more gloomy, more fierce in its religion, than at present it shows itself to be."

While Mill was writing his brilliant Essay, which every one should read, the English Government of the day (1858) instituted prosecutions for the circulation of the doctrine that it is lawful to put tyrants to death, on the ground that the doctrine is immoral. Fortunately the prosecutions were not persisted in. Mill refers to the matter, and maintains that such a doctrine as tyrannicide (and, let us add, anarchy) does not form any exception to the rule that "there ought to exist the fullest liberty of professing and discussing, as a matter of ethical conviction, any doctrine, however immoral it may be considered."

Exceptions, cases where the interference of the authorities is proper, are only apparent, for they really come under another rule. For instance, if there is a direct instigation