Anaximander

Pre-Socratic Philosopher

(610 BCE – Unknown) · Southern Europe

Greek philosopher from Miletus who lived approximately 610–546 BCE, a student of Thales. He is known for developing the concept of the apeiron — an indefinite, boundless source of all things — and for producing one of the earliest known maps of the world. Only a single fragment of his writing survives, quoted by later philosophers.