Heraclitus was a pre-Socratic Greek philosopher who lived in the city of Ephesus, at the time part of the Persian Empire. In his most active period around 500 BCE, Heraclitus postulated a distinguishing theory which he called "Logos" or an ora torical method used to convince or persuasion through logic. He is famously known for his central dogma of philosophy, universal flux, unity of opposites and that fire is element that comprises everything in the universe. The supposed interpretation of these doctrines has been the subject of controversy for historians, since his original inference often drawn from this theory that in the world as Heraclitus conceived - that these contradictory propositions must be true. What interested Heraclitus the most in philosophy was metaphysics and epistemology, which is a very internal subject, which thus gave way for Heraclitus to implore it with absolute confidence in detached monologues that took the form of a perplexing riddle or puzzle. ...
An international resource on Socionics, a theory of personality type.