Dr. F. S. Huegel says: “Advancing civilization will gradually clothe prostitution in more pleasing forms, but only with the destruction of the world will it come to an end!”[82] That is a bold assertion, but whoever cannot think beyond the form of bourgeois society, whoever does not admit that society will transform itself to attain healthful and natural conditions, must agree with Dr. Huegel. M. Rubner, an authority on hygiene, professor at the University of Berlin, and director of the Hygienic Institute, expresses a similar opinion. He says: “Prostitution of women has existed at all times and among all peoples. It is indestructable because it serves the sexual impulse and springs from human nature and because in many cases the tendency to prostitution is due to an innate vice of some women. Just as we find in every population geniuses beside idiots, giants besides dwarfs, and other abnormities, so we also find by the chance of birth abnormities which must lead to prostitution.”[83] None of the above-named conceive the thought that a different social order might remove the causes of prostitution, and none seek to investigate the causes. Some who take up this problem faintly recognize that unfortunate social conditions, weighing heavily upon countless women, might be the chief cause why so many sell their bodies. ~But they do not draw the conclusion that if this be the case, it becomes necessary to bring about different social conditions.~ Among the few who recognize that economic conditions form the chief cause of prostitution is Th. Bade.[84] He says: “The causes of the boundless moral degradation from which the prostitute girls emerge are founded on ~social~ conditions. They are especially due to the decline of the middle classes, particularly the artisan class, among whom only very few continue to ply their trade independently.” Bade concludes his observations by saying: “Material need which has destroyed many middle class families and continues to destroy them also leads to their moral degradation, especially to that of the female sex.”[85] But prostitution is not an institution of nature that, as R. Schmoelder says: “Will remain a constant companion of humanity,”[86] it is a social institution without which we cannot conceive bourgeois society.