This hypothesis postulates that life is neither the product of supernatural creation, nor is it spontaneously generated through abiogenesis, but that it has always existed in the universe.
Although he accepted abiogenesis and the evolution of animals, he rejected the theory that the human species is the product of evolution, arguing that humans have souls.
Classical notions of spontaneous generation, which can be considered under the modern term abiogenesis, held that certain complex, living organisms are generated by decaying organic substances.
In science, abiogenesis is an independent hypothesis from evolutionary theory, which takes it as axiomatic that self-replicating life existed in the distant past, whatever its origin.