For the most part, however, Darwin's ideas simply overlaid the fundamental features of Schleicher's prior evolutionary project, which derived from the work of those individuals immersed in German romanticism and idealism, especially Wilhelm von Humboldt and Hegel.
Na súa maior parte, porén, as ideas de Darwin simplemente revisten os trazos fundamentais do proxecto evolutivo de Schleicher, que derivaba da obra dos que estaban inmersos no romanticismo e idealismo alemáns especialmente Humboldt e Hegel.