Locke fixed limits to toleration. 1. No opinions contrary to human society, or to those moral rules which are necessary to the preservation of civil society, are to be tolerated by the magistrate. Thus, to take examples from our own day, a conservative minister would think himself right on this principle in suppressing the Land and Labour League; a catholic minister in dissolving the Education League; and any minister in making mere membership of the Mormon sect a penal offence. 2. No tolerance ought to be extended to 'those who attribute unto the faithful, religious, and orthodox, that is in plain terms unto themselves, any peculiar privilege or power above other mortals, in civil concernments; or who, upon pretence of religion, do challenge any manner of authority over such as are not associated with them in their ecclesiastical communion.' As I have seldom heard of any sect, except the Friends, who did not challenge as much authority as it could possibly get over persons not associated with it, this would amount to a universal proscription of religion; but Locke's principle might at any rate be invoked against Ultra-montanism in some circumstances. 3. Those are not at all to be tolerated who deny the being of God. The taking away of God, _though but even in thought_, dissolves all society; and promises, covenants, and oaths, which are the bonds of human society, have no hold on such. Thus the police ought to close Mr. Bradlaugh's Hall of Science, and perhaps on some occasions the Positivist School.