[T]he family has agreed to release an abridged version of the letters,
written between 1930 and 1946, in a newly published volume called Heidegger und der Antisemitismus
(“Heidegger and Anti-Semitism”) (Verlag Herder, Freiburg 2016). Inside
these pages one finds an unvarnished picture of the philosopher’s
political disposition. In the Black Notebooks, a kind of diary
of thoughts, Heidegger approached anti-Semitism from a philosophical
remove, but these personal letters published expose him as a bona fide,
unrepentant anti-Semite. They also show that — in contrast to prevailing
beliefs — the Freiburg professor was politically well informed, and was
an early and passionate supporter of National Socialism.