But if the Puritan statute-book was silent, Puritan thought produced the boldest defense of the liberty of divorce which had yet appeared. If taken in the abstract and applied to both sexes alike, it is perhaps the strongest defense which can be made through an appeal to mere authority. For, in spite of their casuistry, their inconsistencies, and their injustice to woman, the writings of John Milton may be said to have about exhausted the resources of theological argument and the learning of his age on this subject.[256] He goes farther than Zwingli, Bucer, or any other reformer in admitting grounds for the absolute dissolution of marriage. According to Milton, divorce is a "law of moral equity," a "pure moral economical law ... so clear in nature and reason, that it was left to a man's own arbitrement to be determined between God and his own conscience;" and "the restraint whereof, who is not too thick-sighted, may see how hurtful and distractive it is to the house, the church, and the commonwealth."[257] It is lawful to Christians "for many other causes equal to adultery," such as cruelty, idolatry, and "headstrong behaviour" on the part of the woman, as also for desertion.[258] For "what are these two cases [adultery and desertion] to many other, which afflict the state of marriage as bad, and yet find no redress?" Hence he spurns a narrow construction as contrary to reason. "What hath the soul of man deserved, if it be in the way of salvation, that it should be mortgaged thus, and may not redeem itself according to conscience out of the hands of such ignorant and slothful teachers as these, who are neither able nor mindful to give due tendance to that precious cure which they rashly undertake; nor have in them the noble goodness, to consider these distresses and accidents of man's life, but are bent rather to fill their mouths with tithe and oblation?"[259] Nor is this the only time when Milton speaks the language of the modern social reformer, though sometimes his strongest arguments from the standpoint of reason are ill sustained by the authority upon which he relies. From the law of Moses, with which he insists that the law of Jesus must agree, he thus reaches the conclusion that just ground of divorce is "indisposition, unfitness, or contrariety of mind, arising from a cause in nature unchangeable, hindering, and ever likely to hinder the main benefits of conjugal society, which are solace and peace."[260] To this ideal of the true end of wedlock he returns again and again. Rejecting the gross and carnal conception of the Fathers and canonists, their glaring contradiction between marriage as a "defilement" and a sacrament,[261] he urges that matrimony is a society "more than human," centering "in the soul rather than in the body;" a companionship resting upon the "deep and serious verity" of "mutual love," without which wedlock is "nothing but the empty husks of an outside matrimony, as undelightful and unpleasing to God as