In these considerations we have ample grounds for maintaining that the lifelong union of one man and of one woman should be the normal or dominant type of intercourse between the sexes. We can prove that it is on the whole most conducive to the happiness, and also to the moral elevation, of all parties. But beyond this point it would, I conceive, be impossible to advance, except by the assistance of a special revelation. It by no means follows that because this should be the dominant type it should be the only one, or that the interests of society demand that all connections should be forced into the same die. Connections, which were confessedly only for a few years, have always subsisted side by side with permanent marriages; and in periods when public opinion, acquiescing in their propriety, inflicts no excommunication on one or both of the partners, when these partners are not living the demoralising and degrading life which accompanies the consciousness of guilt, and when proper provision is made for the children who are born, it would be, I believe, impossible to prove, by the light of simple and unassisted reason, that such connections should be invariably condemned. It is extremely important, both for the happiness and for the moral well-being of men, that lifelong unions should not be effected simply under the imperious prompting of a blind appetite. There are always multitudes who, in the period of their lives when their passions are most strong, are incapable of supporting children in their own social rank, and who would therefore injure society by marrying in it, but are nevertheless perfectly capable of securing an honourable career for their illegitimate children in the lower social sphere to which these would naturally belong. Under the conditions I have mentioned, these connections are not injurious, but beneficial, to the weaker partner; they soften the differences of rank, they stimulate social habits, and they do not produce upon character the degrading effect of promiscuous intercourse, or upon society the injurious effects of imprudent marriages, one or other of which will multiply in their absence. In the immense variety of circumstances and characters, cases will always appear in which, on utilitarian grounds, they might seem advisable.