Socrates was a Greek philosopher from Athens who is credited as one of the founders of Western philosophy, and as being the first moral philosopher of the Western ethical tradition of thought. An enigmatic figure, he authored no texts, and is known chiefly through the accounts of classical writers composing after his lifetime, particularly his students Plato and Xenophon. Plato's dialogues are among the most comprehensive accounts of Socrates to survive from antiquity, from which Socrates has become renowned for his contributions to the fields of ethics and epistemology. However, questions remain regarding the distinction between the real-life Socrates and Plato's portrayal of Socrates in his dialogues.