This is a lecture course presented at the University of Freiburg
during summer semester 1942. The course is split into three parts.
First Heidegger looks for metaphysics in "The Ister",
then he returns to a passage of Sophocles' Antigone he had used,
more briefly, in a 1935 course, Introduction to Metaphysics .
Finally he examines more of "The Ister". Hölderlin's
poems have been translated especially for this book, to help
understand Heidegger's interpretation of the German.