In their attempt to make philosophy engage the world, Locke and Hume empiricized philosophy. But in empiricizing philosophy, Locke and Hume made philosophy collapse into pure skepticism, pure skepticism being the most compete conceivable autistic withdrawal from reality into one’s own mind. And what this shows is that, even when philosophers try to make philosophy not be an autistic retreat, it ends up being precisely that. Which does rather confirm my conception of philosophy as autistic retreat.