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Heraclitus - Wikipedia
Heraclitus of Ephesus was an ancient Greek, pre-Socratic, Ionian philosopher and a native of the city of Ephesus, which was then part of the Persian Empire.
Heraclitus - Stanford Encyclopedia of Philosophy
https://plato.stanford.edu › entries › heraclitus
by DW Graham2007Cited by 262 — A Greek philosopher of Ephesus (near modern Kuşadası, Turkey) who was active around 500 BCE, Heraclitus propounded a distinctive theory ...