We’ve been exploring the curious case of the German philosopher Martin Heidegger (1889-1976), whose public loyalty to the Third Reich and support of its anti-Semitic policies didn’t keep him from being a hero to philosophers and philosophy students around the world, some of whom managed to convince themselves that his Nazism hadn’t been prolonged, or deep, or authentic, or important to his work. These fans, however, were rocked by the 2014 publication of a set of his diaries – known as the Black Notebooks because of the color of the blank volumes in which they’d been scribbled – that provided ample evidence that Heidegger had, in fact, been a genuine and profoundly dedicated devotee of Nazi thought (Jew-hatred included) throughout the Hitler era, and that he viewed this ideological proclivity as inextricable from his own philosophical oeuvre.

One of the reviewers of the Black Notebooks was Joshua Rothman, who recalled in The New Yorker that reading Heidegger had supplied him with one of the two or three most profound intellectual experiences of his life. “I was in my late twenties, and struggling with a dissertation on the nature of consciousness (what it is, where it comes from, how it fits into the material world). This had turned out to be an impossible subject. Everything I read succeeded only by narrowing the world, imagining it to be either a material or a spiritual place—never both.” (Why not study neurology? Oh, never mind.) Then he read Being and Time. “It was as if, having been trapped on the ground floor of a building, I had found an express elevator to the roof, from which I could see the stars. Heidegger had developed his own way of describing the nature of human existence. It wasn’t religious, and it wasn’t scientific; it got its arms around everything, from rocks to the soul.” He then turned to another Heidegger book, The Essence of Truth, wherein Heidegger “proposed a different and, to my mind, a more realistic idea of truth than any I’d encountered before. He believed that, before you could know the truth about things, you had to care about them.” (This seems wrong on the face of it: after all, it is possible to know, say, that Ashgabat is the capital of Turkmenistan without caring in the least about this information. But again, never mind.)

Rothman reported on a recent confab at which philosophers had gathered – in a sort of philosophical equivalent of an emergency meeting of the U.N. Security Council – to figure out what to do about the explosive contents of the Black Notebooks. His account shed a fascinating light on the mentality of academic philosophers. One prominent participant started off by making clear the importance to him of career considerations. “I’m the director of the Martin Heidegger Institute,” he said, “and I actually want to be that for a longer time.” The audience laughed. “If we would say that Heidegger really was an anti-Semitic philosopher, then,” he added, “yeah, that would be really a catastrophe, in a certain way, for me.”

Rothman appreciated the honesty of this admission; yet the ensuing remarks by many of the philosophers in attendance exhibited a reflexive desire not to get at the truth, however intellectually uncomfortable and professionally inconvenient, but to rescue Heidegger from himself – to find some way to preserve and esteem his philosophy in spite of his Nazism and anti-Semitism. One prominent philosopher, Babette Babich, made an argument that Rothman summed up as: “Don’t throw the baby out with the bathwater.”

Yet the baby and bathwater metaphor is utterly inappropriate here. A baby and bathwater are two different things. A philosophy is of a piece – a man’s commitment to Nazism cannot be neatly separated from the rest of his thinking about life. However much some of Heidegger’s admirers may wish to isolate his Nazism from the rest of his philosophy, then, it’s an impossible task.

But no great loss. There are many other potential life guides out there – among them writers like George Orwell, who saw totalitarianism (in all its forms) for what it was, despised it, and expressed his contempt in clear, unpretentious language from which most philosophers would be well advised to learn.