In the Jewish Review of Books, Richard Wolin reviews
the Black Notebooks.
What the Black Notebooks now provide, in contrast to the lectures and theoretical treatises that have already been published, is access to Heidegger’s innermost philosophical thoughts: the elaboration of an extensive “hidden doctrine” that the philosopher developed in the solitude of his Black Forest ski hut.
This concern for innermost thoughts
indicates the Cartesian ideology at work here. Philosophy is not about some homunculus inside Heidegger that should be measured and positioned against some ordering of political correctness. Presumably Wolin would throw out modern logic because of Frege's antisemitism.