Unity and liberty are the only legitimate principles on which the position of a Church in a State can be regulated, but the distance between them is immeasurable, and the transition extremely difficult. To pass from religious unity to religious liberty is to effect a complete inversion in the character of the State, a change in the whole spirit of legislation, and a still greater revolution in the minds and habits of men. So great a change seldom happens all at once. The law naturally follows the condition of society, which does not suddenly change. An intervening stage from unity to liberty, a compromise between toleration and persecution, is a common but irrational, tyrannical, and impolitic arrangement. It is idle to talk of the guilt of persecution, if we do not distinguish the various principles on which religious dissent can be treated by the State. The exclusion of other religions--- the system of Spain, of Sweden, of Mecklenburg, Holstein, and Tyrol--is reasonable in principle, though practically untenable in the present state of European society. The system of expulsion or compulsory conformity, adopted by Lewis XIV. and the Emperor Nicholas, is defensible neither on religious nor political grounds. But the system applied to Ireland, which uses religious disabilities for the purpose of political oppression,[325] stands alone in solitary infamy among the crimes and follies of the rulers of men. The acquisition of real definite freedom is a very slow and tardy process. The great social independence enjoyed in the early periods of national history is not yet political freedom. The State has not yet developed its authority, or assumed the functions of government. A period follows when all the action of society is absorbed by the ruling power, when the license of early times is gone, and the liberties of a riper age are not yet acquired. These liberties are the product of a long conflict with absolutism, and of a gradual development, which, by establishing definite rights revives in positive form the negative liberty of an unformed society. The object and the result of this process is the organisation of self-government, the substitution of right for force, of authority for power, of duty for necessity, and of a moral for a physical relation between government and people. Until this point is reached, religious liberty is an anomaly. In a State which possesses all power and all authority there is no room for the autonomy of religious communities. Those States, therefore, not only refuse liberty of conscience, but deprive the favoured Church of ecclesiastical freedom. The principles of religious unity and liberty are so opposed that no modern State has at once denied toleration and allowed freedom to its established Church. Both of these are unnatural in a State which rejects self-government, the only secure basis of all freedom, whether religious or political. For religious freedom is based on political