Anaximander of Miletus (c. 610 – c. 546 BCE), a pre-Socratic philosopher and student of Thales, was a pioneer of cosmology, astronomy, and natural philosophy.
He introduced the concept of the apeiron (infinite) as the origin of all things, developed early theories on evolution, and created one of the first world maps.
His revolutionary ideas laid the groundwork for scientific thinking and inspired generations of philosophers and scientists.