In an earlier post I asked, Who is the most loathsome philosopher in history? I suggested that Rousseau and Heidegger be considered top candidates.
Some more data relevant to Rousseau: He made his common-law wife leave all five of their infants at foundling hospitals, on the grounds that they’d be better off there and that he couldn’t afford to raise them.
Had he tried, Rousseau may very well have been incompetent as a father. Yet also relevant are these statistics for one foundling hospital in Paris: “Between 1771 and 1773 the Hotel-Dieu recorded mortality rates between 62 percent and 75 percent. French church registries of the same period show that in the private sector the death rate among infants was only 18 percent.”