Anaximander and Thales were pre-Socratic Greek philosophers from Miletus in Asia Minor.
Thales was one of the Seven Sages of Greece, regarded by many, most notably Aristotle, as the first philosopher in the Greek tradition. His attempts to explain natural phenomena without reference to mythology would greatly influence subsequent philosophy and laid the foundations of the scientific revolution. As the first to define general principles and set forth hypotheses, he has been dubbed the ‘Father of Science’, and, as the first known individual to whom a mathematical discovery has been attributed, the first true mathematician. He founded the Milesian school, where he was master to Anaximander.
Anaximander succeeded Thales to become the second master of the Milesian school where he counted Anaximens and possibly Pythagoras amongst his pupils. He is considered the first philosopher to have recorded his studies, although only one fragment of his work remains. He was an early proponent of science and tried to observe and explain different aspects of the universe, with a particular interest in its origins, claiming that nature is ruled by laws, just like human societies, and anything that disturbs the balance of nature does not last long. He also made significant contributions in astronomy, geometry and geography.