Über den Bildungstrieb

The essay examines a putative formative drive that shapes development in animals and plants, combining observational notes with philosophical reflection. It surveys historical and contemporary theories of generation, contrasts epigenesis—where embryonic substance progressively acquires form—with preformationist accounts that posit preexisting germs, and criticizes expansive hypotheses such as panspermia. Drawing on microscopic observations and comparative examples, it analyzes fertilization as the trigger for organization and traces debates about how reproductive seeds are nested or transmitted. The author aims to synthesize earlier arguments and to clarify conceptual distinctions that can guide further inquiry into generation and development.