Oparin (Feb 18, 1894 - April 21, 1980) was a Russian biochemist who suggested (1938) that life on Earth developed through gradual chemical evolution of carbon-based molecules in a “primordial soup”, at just about the same time as the British biologist J. B. S. Haldane was independently proposing a similar theory.
As early as 1922, at a meeting of the Russian Botanical Society, he had first introduced his concept of a primordial organism arising in a brew of already-formed organic compounds.
More info at Physics of the Universe
Download his book "The Origin of Life on The Earth" from Archive.org
