7. Anaximander
He was essentially the first metaphysician who argued that the origin of everything is “boundless.” He also drew a map of the world and was the first geographer. Anaximander is one of the most popular pre-Socratic philosophers who argued that the origin is boundless and the boundless has no origin. Unlike Thales, he felt that the earth floated free in the universe.
“The source from which existing things derive their existence is also that to which they return at their destruction.”
