The study of social hygiene means the study of those things which concern the welfare of human beings living in societies. There can, therefore, be no study more widely important or more generally interesting. I fear, however, that by many persons social hygiene is vaguely regarded either as a mere extension of sanitary science, or else as an effort to set up an intolerable bureaucracy to oversee every action of our lives, and perhaps even to breed us as cattle are bred.
That is certainly not the point of view from which this book has been written. Plato and Rabelais, Campanella and More, have been among those who announced the principles of social hygiene here set forth. There must be a social order, all these great pioneers recognized, but the health of society, like the health of the body, is marked by expansion as much as by restriction, and, the striving for order is only justified because without order there can be no freedom. If it were not the mission of social hygiene to bring a new joy and a new freedom into life I should not have concerned myself with the writing of this book.
When we thus contemplate the process of social hygiene, we are no longer in danger of looking upon it as an artificial interference with Nature. It is in the Book of Nature, as Campanella put it, that the laws of life and of government are to be read. Or, as Quesnel said two centuries ago, more precisely for our present purpose, "Nature is universal hygiene." All animals are scrupulous in hygiene; the elaboration of hygiene moves pari passu with the rank of a species in intelligence. Even the cockroach, which lives on what we call filth, spends the greater part of its time in the cultivation of personal cleanliness. And all social hygiene, in its fullest sense, is but an increasingly complex and extended method of purification—the purification of the conditions of life by sound legislation, the purification of our own minds by better knowledge, the purification of our hearts by a growing sense of responsibility, the purification of the race itself by an enlightened eugenics, consciously aiding Nature in her manifest effort to embody new ideals of life. It was not Man, but Nature, who realized the daring and splendid idea—risky as it was—of placing the higher anthropoids on their hind limbs and so liberating their fore-limbs in the service of their nimble and aspiring brains. We may humbly follow in the same path, liberating latent forces of life and suppressing those which no longer serve the present ends of life. For, as Shakespeare said, when in The Winter's Tale he set forth a luminous philosophy of social hygiene and applied it to eugenics,"Nature is made better by no mean But Nature makes that mean ... This is an art Which does mend Nature, change it rather, but The art itself is Nature."
In whatever way it may be understood, however, social hygiene is now very much to the front of people's minds. The present volume, I wish to make clear, has not been hastily written to meet any real or supposed demand....