The world was a place to escape from on the best terms possible. In our own day this mediaeval idea of a static society yields only grudgingly, and the notion of inevitable vital change is as yet far from assimilated. We confess it with our lips, but resist it in our hearts. We have learned as yet to respect only one class of fundamental innovators, those dedicated to natural science and its applications. The social innovator is still generally suspect.

To the mediaeval theologian, man was by nature vile. We have seen that, according to the Christian Epic, he was assoiled from birth with the primeval sin of his first parents, and began to darken his score with fresh offenses of his own as soon as he became intelligent enough to do so. An elaborate mechanism was supplied by the Church for washing away the original pollution and securing forgiveness for later sins. Indeed, this was ostensibly its main business.

We may still well ask, Is man by nature bad? And accordingly as we answer the question we either frame appropriate means for frustrating his evil tendencies or, if we see some promise in him, work for his freedom and bid him take advantage of it to make himself and others happy. So far as I know, Charron, a friend of Montaigne, was one of the first to say a good word for man's animal nature, and a hundred years later the amiable Shaftesbury pointed out some honestly gentlemanly traits in the species. To the modern student of biology and anthropology man is neither good nor bad. There is no longer any "mystery of evil". But the mediaeval notion of sin—a term heavy with mysticism and deserving of careful scrutiny by every thoughtful person—still confuses us.

Of man's impulses, the one which played the greatest part in mediaeval thoughts of sin and in the monastic ordering of life was the sexual. The presuppositions of the Middle Ages in the matter of the relations of men and women have been carried over to our own day. As compared with many of the ideas which we have inherited from the past, they are of comparatively recent origin. The Greeks and Romans were, on the whole, primitive and uncritical in their view of sex. The philosophers do not seem to have speculated on sex, although there was evidently some talk in Athens of women's rights. The movement is satirized by Aristophanes, and later Plato showed a willingness in The Republic to impeach the current notions of the family and women's position in general.

But there are few traces of our ideas of sexual "purity" in the classical writers. To the Stoic philosopher, and to other thoughtful elderly people, sexual indulgence was deemed a low order of pleasure and one best carefully controlled in the interests of peace of mind. But with the incoming of Christianity an essentially new attitude developed, which is still, consciously or unconsciously, that of most people to-day.

St. Augustine, who had led a free life as a teacher of rhetoric in Carthage and Rome, came in his later years to believe, as he struggled to overcome his youthful temptations, that sexual desire was the most devilish of man's enemies and the chief sign of his degradation. He could imagine no such unruly urgence in man's perfect estate, when Adam and Eve still dwelt in Paradise. But with man's fall sexual desire appeared as the sign and seal of human debasement. This theory is poignantly set forth in Augustine's City of God. He furnished therein a philosophy for the monks, and doubtless his fourteenth book was well thumbed by those who were wont to ponder somewhat wistfully on one of the sins they had fled the world to escape.

Christian monasticism was spreading in western Europe in Augustine's time, and the monkist vows included "chastity". There followed a long struggle to force the whole priesthood to adopt a celibate life, and this finally succeeded so far as repeated decrees of the Church could effect it. Marriage was proper for the laity, but both the monastic and secular clergy aspired to a superior holiness which should banish all thoughts of fervent earthly love. Thus a highly unnatural life was accepted by men and women of the most varied temperament and often with slight success.

The result of Augustine's theories and of the efforts to frustrate one of man's most vehement impulses was to give sex a conscious importance it had never possessed before. The devil was thrust out of the door only to come in at all the windows. In due time the Protestant sects abolished monasteries, and the Catholic countries later followed their example. The Protestant clergy were permitted to marry, and the old asceticism has visibly declined. But it has done much to determine our whole attitude toward sex, and there is no class of questions still so difficult to discuss with full honesty or to deal with critically and with an open mind as those relating to the intimate relations of men and women.

No one familiar with mediaeval literature will, however, be inclined to accuse its authors of prudishness. Nevertheless, modern prudishness, as it prevails especially in England and the United States—our squeamish and shamefaced reluctance to recognize and deal frankly with the facts and problems of sex—is clearly an outgrowth of the mediaeval attitude which looked on sexual impulse as of evil origin and a sign of man's degradation. Modern psychologists have shown that prudishness is not always an indication of exceptional purity, but rather the reverse. It is often a disguise thrown over repressed sexual interest and sexual preoccupations. It appears to be decreasing among the better educated of the younger generation. The study of biology, and especially of embryology, is an easy and simple way of disintegrating the "impurity complex". "Purity" in the sense of ignorance and suppressed curiosity is a highly dangerous state of mind. And such purity in alliance with prudery and defensive hypocrisy makes any honest discussion or essential readjustment of our institutions and habits extremely difficult.

One of the greatest contrasts between mediaeval thinking and the more critical thought of to-day lies in the general conception of man's relation to the cosmos. To the medieval philosopher, as to the stupidest serf of the time, the world was made for man. All the heavenly bodies revolved about man's abode as their center. All creatures were made to assist or to try man. God and the devil were preoccupied with his fate, for had not God made him in his own image for his glory, and was not the devil intent on populating his own infernal kingdom? It was easy for those who had a poetic turn of mind to think of nature's workings as symbols for man's edification. The habits of the lion or the eagle yielded moral lessons or illustrated the divine scheme of salvation. Even the written word was to be valued, not for what it seemed to say, but for hidden allegories depicting man's struggles against evil and cheering him on his way.