To Alexis de Tocqueville, authority in religion was as necessary as freedom in politics:
When the religion of a people is destroyed, doubt gets hold of the higher powers of the intellect and half paralyzes all the others. Every man accustoms himself to having only confused and changing notions on the subjects most interesting to his fellow creatures and himself. His opinions are ill-defended and easily abandoned; and, in despair of ever solving by himself the hard problems respecting the destiny of man, he ignobly submits to think no more about them.
Such a condition cannot but enervate the soul, relax the springs of the will, and prepare a people for servitude. Not only does it happen in such a case that they allow their freedom to be taken from them; they frequently surrender it themselves. When there is no longer any principle of authority in religion any more than in politics, men are speedily frightened at the aspect of this unbounded independence. The constant agitation of all surrounding things alarms and exhausts them. As everything is at sea in the sphere of the mind, they determine at least that the mechanism of society shall be firm and fixed; and as they cannot resume their ancient belief, they assume a master.
For my own part, I doubt whether man can ever support at the same time complete religious independence and entire political freedom. And I am inclined to think that if faith be wanting in him, he must be subject; and if he be free, he must believe.