Definition
Lorenz Oken (1779-1851) was a German naturalist, botanist, biologist, and comparative anatomist. He's known for his theories on the origin of life, which were somewhat controversial in his time. Oken proposed that all organisms are fundamentally composed of 'Urschleim' or primal slime. Think of him as a precursor to modern evolutionary theory, though his ideas were more philosophical than scientific. He connected philosophy with natural science. His work laid some groundwork for future developments in biology, though heavily debated during his time.