"The modern intellectual is, for the most part, a lecher and a fool. His theories are propounded for everyone but himself. So Rousseau, the writer of Emile, the first modern book on child rearing sent all five of his illegitimate children to the orphanage shortly after they were born, which given the conditions of orphanages in the 18th century, meant to their deaths. Marx, the champion of the proletariat, knew only one proletarian in his life, his maid, Lenchen, to whom he paid not one single penny in wages. In addition to this economic exploitation, there was also the sexual exploitation. Marx fathered an illegitimate child by her and refused to acknowledge it."
— E. Michael Jones, Degenerate Moderns: Modernity as Rationalized Sexual Misbehavior