Pre-Socratic Greek philosopher Due to the oracular and paradoxical nature of his philosophy, and his fondness for word play, he was called "The Obscure" even in antiquity. He wrote a single work, On Nature, but the obscurity is made worse by its remaining only in fragments. His cryptic utterances have been the subject of numerous interpretations. He's been seen variously as a "material monist or a process philosopher; a scientific cosmologist, a metaphysician, or mainly a religious thinker; an empiricist, a rationalist, or a mystic; a conventional thinker or a revolutionary; a developer of logic or one who denied the law of non-contradiction; the first genuine philosopher or an anti-intellectual obscurantist. Life Floruit Heraclitus disliked Pythagoras. The dates for Heraclitus are uncertain. Diogenes Laërtius Ephesus on the coast of Asia Minor, birthplace of Heraclitus Ephesus Childhood Misanthropy "Most men are bad" - Bias of Priene Dropsy and death G.