Top Results for Presocratic

Heraclitus was an ancient Greek philosopher born in Ephesus around 500 BCE. He is primarily known for his theories concerning perpetual flux – the idea that everything is constantly changing and nothing remains static. His concept of the “logos,” a unifying principle governing this change, profoundl...

Anaximander, a 6th-century BC Greek philosopher from Miletus, is notable for his cosmological theories. He posited that the ‘apeiron’ – an indefinite and boundless principle – was the source of all existence. His work represents an early attempt to understand the universe and produced one of the fir...

Thales of Miletus was an ancient Greek philosopher born around 624 BCE in Ionia. He is considered a foundational figure in Western thought for his attempts to explain the natural world through reason rather than mythology. His cosmological inquiries—particularly his belief that water was the fundame...

Empedocles was an ancient Greek philosopher born in Acragas. He is notable for developing one of the earliest theories of dualism, proposing that all matter originates from combinations of earth, air, fire, and water. Driven by Love and opposing forces of Strife, these elements interact to create an...

Anaxagoras (c. 510 – c. 428 BC) was a Greek philosopher who significantly contributed to early Western thought. He developed cosmological theories centered on ‘Nous,’ or mind, as the fundamental principle governing the universe’s order and movement. His work represents an important step in presocrat...

Leucippus was a pre-Socratic Greek philosopher of the 5th century BCE credited as the originator of atomism, the theory that all matter consists of indivisible particles called atoms moving through void. Virtually no biographical information about him survives, and his teachings are known primarily...

Xenophanes was a Greek poet and philosopher active during the late sixth and early fifth centuries BCE. He criticized traditional stories that attributed human appearance, misconduct, and local ethnic features to the gods, observing that people imagine deities in their own image. His surviving fragm...

Anaximenes was a pre-Socratic philosopher from the ancient Greek city of Miletus who was active during the 6th century BCE. As a prominent member of the Milesian School, he argued that aer, or air, was the fundamental underlying substance of all matter. He theorized that air could transform into oth...