How does Du Bois react to the revelation that he is “shut out from the world by a vast veil”?

Du Bois is complacent to his condition and withdraws even further from society.

Then it dawned upon me with a certain suddenness that I was different from the others; or like, mayhap, in heart and life and longing, but shut out from their world by a vast veil. I had thereafter no desire to tear down that veil, to creep through; I held all beyond it in common contempt, and lived above it in a region of blue sky and great wandering shadows.