Although not a technical book, 'At the Existentialist Cafe' goes quite deeply into Heidegger's relationship with Arendt and Husserl and his time as a member of

Although not a technical book, 'At the Existentialist Cafe' goes quite deeply into Heidegger's relationship with Arendt and Husserl and his time as a member of the Nazi party. It's quite damning if it's true. https://en.wikipedia.org/wiki/At_the_Existentialist_Cafe https://en.wikipedia.org/wiki/At_the_Existentialist_Cafe