I've never made my peace with Hesse, though I've tried throughout several of his novels, from Demien, to Siddhartha, to The Steppenwolf. I don't agree with his belief that salvation is uncovered from within the self-realized individual, nor with the resulting disdain for religion, but I relate to his disgust at societal convention, and the general sense of separateness and isolation that modern life breeds.
It is Hesse's poetic style that impresses me the most. There are times when the reader feels more like he is holding a book of poetry than a novel. Here is a passage from The Steppenwolf, a book so powerful that one of my closest friends has a Steppenwolf tattoo on his upper arm:
"There is much to be said for contentment and painlessness, for these bearable and submissive days, on which neither pain nor pleasure cry out, on which everything only whispers and tiptoes around. But the worst of it is that it is just this contentment that I cannot endure. After a short time it fills me with irrepressible loathing and nausea. Then, in desperation, I have to escape into other regions, if possible on the road to pleasure, or, if that cannot be, on the road to pain. When I have neither pleasure nor pain and have been breathing for a while the lukewarm insipid air of these so-called good and tolerable days, I feel so bad in my childish soul that I smash my rusty lyre of thanksgiving in the face of the slumbering god of contentment and would rather feel the most devilish pain burn in me than this warmth of a well-heated room. A wild longing for strong emotions and sensations seethes in me, a rage against this toneless, flat, normal and sterile life. I have a mad impulse to smash something, a warehouse perhaps, or a cathedral, or myself, to commit outrages, to pull off the wigs of a few revered idols, to provide for a few rebellious schoolboys with the longed-for ticket to Hamburg, to seduce a little girl, or to stand one or two representatives of the established order on their heads. For what I always hated and detested and cursed above all things was this contentment, this healthiness and comfort, this carefully preserved optimism of the middle classes, this fat and prosperous brood of mediocrity."