Because Heidegger's Gesamtausgabe presents us, as collection, the full range of his thinking in published works, lectures, and private notes, there are key texts that have remained obscure and overlooked by a history of Heideggerian scholarship, partly because of the unavailably of certain texts and partly due to Heidegger's own ordering of his collected works before his death in 1976. This book brings together ten lesser-known texts from the Gesamtausgabe , in an effort to display and compare Heidegger's thinking on key thinkers in relation to better-known texts. What makes this relevant is that it provides a more complete picure of Heidegger's thought, allows the reader to consider a unique range of thinking from 1926/1927 to 1957, presents subtle contradictions and/or nuances in Heidegger's reading of Anaximander, Plato, Aristotle, Nietzsche, and Kant, when compared to better-known texts, and, for the first time, gives assessments of Aquinas and Augustine.