Thales is the first recorded philosopher of all time. He lived from c.624 BC to c.526BC, and his primary idea was that everything comes from water and believed (according to Aristotle) water to be the grounding of everything that existed. He was the first to try and explain the natural world through natural causes rather than turning to the supernatural as an explanation as to why the world is as it is. A lot of what we know about Thales comes from Aristotle, who said that what Thales was trying to do was find out what material grounded the composition of everything, and he thought that this was water, saying that the earth was floating on water and he used this theory to explain earthquakes. Thales was a hylozoist (literally ‘living matter’) and thought that the world’s matter is alive, making the earth a kind of living animal or machine. He was also a materialist and sensist-he believed that everything is material and founded on the material (today this would be atoms), and also believed that all we can take into account is what we can experience through our senses.
Thales is known as the father of philosophy, and his work was foundational in starting a long line of philosophers who attempted to discover natural explanations for why the world is as it is, rather than using the supernatural, and without Thales who knows what would have happened?