It is worth while for us to consider the case fully and fairly, that we may see what it is that is happening to us, and welcome with open arms the happiest change in human condition that ever came into the world. To free an entire half of humanity from an artificial position; to release vast natural forces from a strained and clumsy combination, and set them free to work smoothly and easily as they were intended to work; to introduce conditions that will change humanity from within, making for better motherhood and fatherhood, better babyhood and childhood, better food, better homes, better society,—this is to work for human improvement along natural lines. It means enormous racial advance, and that with great swiftness; for this change does not wait to create new forces, but sets free those already potentially strong, so that humanity will fly up like a released spring. And it is already happening. All we need do is to understand and help. XV. As we learn to see how close is the connection of that which we call the soul with our external conditions, how the moral sense and the behavior of man are modified by the environment, we must of course look for marked results in psychic development arising from so important a condition as our sexuo-economic relation. The relation of the sexes, in whatever form, has always been observed to affect strongly the moral nature of mankind; and this is one reason why we have placed such disproportionate stress upon the special virtues of that relation. The word “moral” in common use means “chaste”; and, in the case of women, the word “virtue” itself simply implies the one virtue of chastity. Large, popular conceptions are never baseless. They are rooted in deep truths, felt rather than seen, and, however false and silly in external interpretation, may be trusted in their general trend. It is not that the virtue of chastity is so much more important to the race than the virtue of honesty, the virtue of courage, the virtues of cheerfulness, of courtesy, of kindness, but that upon the sex-relation in which we live depends so much of the further development and arrangement of our whole moral nature. What we call the moral sense is an intellectual recognition of the relative importance of certain acts and their consequences. This appears vaguely and weakly among early savages, and was for long mainly applied to a few clearly defined and arbitrary rites and ceremonies, set rules in a game of priest-and-people. But the habit of associating a sense of worthiness with certain acts by which came praise and profit grew in the childish soul, and the range of moral deeds widened. It has been widening ever since, growing deeper and higher and far more subtle, developing with the other social qualities.