In 494 BC, Agrigento, Italy there was a Greek pre-Socratic philosopher and a native citizen of Akragas, a Greek city in Sicily named Empedocles
I’m Empedocles a Greek philosopher who is best known for my belief that all matter was composed of four elements: fire, air, water, and earth. Some have considered me the inventor of rhetoric and the founder of the science of medicine in Italy.
About a century after Empedocles devised it, Aristotle popularized and added to it. Empedocles' four elements came to be known as the Aristotelian Elements. For over two millennia people believed these elements were the basis of all matter. The theory had incredible staying power.
I’m Aristotle, a Greek philosopher and a scientist. I believe that all living organisms undergo changes through time. It was based on the idea of Empedocles
I’m Georges Louis-Buffon, I am a French naturalist and a mathematician. I published the natural history of animals. It’s main idea is that species change over time, the change in species is brought about by the action of the environment.
...after all the great contributions of these, Theory of Evolution was created
I’m Jean Baptiste Lamarck and I am a naturalist and biologist. I believe that species could not become extinct; it simply evolves into different species. I am the first person who offered scientific explanation of evolution.
And I’m Erasmus Darwin, I am a naturalist, botanist, physician, philosopher and a well known poet. I formulated the first formal theories on evolution in Zoonomia, my theory is that all organisms share a common ancestor.