https://en.wikipedia.org/wiki/Thales_of_Miletus
Thales of Miletus (/ ˈ θ eɪ l iː z / THAY-leez; Greek: Θαλῆς; c. 624/623 – c. 548/545 BC) was a Greek mathematician, astronomer, statesman, and pre-Socratic philosopher from Miletus in Ionia, Asia Minor.He was one of the Seven Sages of Greece.Many, most notably Aristotle, regarded him as the first philosopher in the Greek tradition, and he is otherwise historically recognized as ...