Heraclitus of Ephesus (Ancient Greek - Herákleitos ho Ephésios (Herakleitos the Ephesian)) (c. 535 - 475 BC), known as "The Obscure" (Ancient Greek - ho Skoteinós), was a pre-Socratic Greek philosopher, a native of Ephesus on the coast of Asia Minor. His father was named Bloson.Kahn, Charles. The Art and Thought of Heraclitus: Fragments with Translation and Commentary.