Höherzüchtung des Menschen auf biologischer Grundlage.

A compelling glimpse into a 1909 scientific gathering, this lecture tackles the ambitious notion of enhancing humanity on a biological foundation. Delivered before an audience of naturalists and physicians, it weaves together emerging ideas about heredity, health, and the potential for directed improvement of the human race.

The speaker revisits the prevailing disease paradigm, arguing that many ailments stem not from external infection but from internal imbalances such as toxic gut conditions, climate‑related factors, and bodily “sludge.” Drawing on contemporary reform pamphlets, he links concepts of blood purification, digestive health, and environmental influences to a broader vision of a healthier, more robust population.

Listeners are invited to hear the period’s precise medical language and the earnest optimism behind early eugenic thought. The talk offers a window into the scientific debates of its time, revealing how early 20th‑century physicians imagined a future shaped by biology, hygiene, and purposeful human development.