The simple aim of this lecture is to arrive at originary ‘logic.’ ‘Logic’ is originary when it consists of the thinking ‘of the’ Λόγος, when the originary Λόγος is thought and is present in and for this thinking. Such has transpired in the thinking of Heraclitus. Our simple aim is thus to think-after what Heraclitus says about the Λόγος. These statements will become clearer in what follows.