Nineteenth century capitalism had in reality engendered and cultivated
the very type of working class best suited to its own purpose--an inert,
docile, irresponsible and submissive class, progressively incapable
of effective and aggressive organization. Like the economists of the
Manchester school, Marx failed to recognize the interplay of human
instincts in the world of industry. All the virtues were embodied in the
beloved proletariat; all the villainies in the capitalists. The greatest
asset of the capitalism of that age was, as a matter of fact, the
uncontrolled breeding among the laboring classes. The intelligent and
self-conscious section of the workers was forced to bear the burden of
the unemployed and the poverty-stricken.

Marx was fully aware of the consequences of this condition of things,
but shut his eyes tightly to the cause. He pointed out that capitalistic
power was dependent upon "the reserve army of labor," surplus labor,
and a wide margin of unemployment. He practically admitted that
over-population was the inevitable soil of predatory capitalism. But he
disregarded the most obvious consequence of that admission. It was all
very dramatic and grandiloquent to tell the workingmen of the world to
unite, that they had "nothing but their chains to lose and the world
to gain." Cohesion of any sort, united and voluntary organization, as
events have proved, is impossible in populations bereft of intelligence,
self-discipline and even the material necessities of life, and cheated
by their desires and ignorance into unrestrained and uncontrolled
fertility.

In pointing out the limitations and fallacies of the orthodox Marxian
opinion, my purpose is not to depreciate the efforts of the Socialists
aiming to create a new society, but rather to emphasize what seems to me
the greatest and most neglected truth of our day:--Unless sexual science