Eugenics, which I'll define here as the selective breeding, sterilization, and biological engineering of humans with political or utopian aims, was a major historical force between the Late Victorian era and the end of WWII.
My question pertains to the Early Modern period. The Scientific Revolution and the Enlightenment were a high point for scientific optimism, ambitious political philosophy, the expansion of state power, utopian writing, and a belief in the perfectibility of humankind. It also saw major developments in the social sciences and medicine, and much theorizing about the causal processes involved in heredity and biological life.
Were there any Early Modern precursors to eugenics, in Europe, as defined above?
I'm interested from the vantage of intellectual history, in terms of social engineering, class, and disability as opposed to a focus on the development of ideas about race.