One of these books that I'd forgotten I had. My favourite Camus used to be A Happy Death. Pretty grim and intense stuff, but with an unrelenting honesty to it that meant a lot to me as a youngster as I tried to find a place for myself in a world that seemed terribly fake.
(Of course I never did find a place for myself, but hey.)
I'm sure that reading volumes like this, even if like me it's so long ago that you forget that you have, affects the workings of your brain, permanently. Affects the Actual Brain Chemistry. Like seeing something strikingly amazing as a child, or like meeting somebody with whom there is that unexpected warmth of like-minded recognition, so that it doesn't really matter what occurs after or that you might not meet again, because that moment has made you remember that you are not alone in the universe; or like a comforting hand upon the shoulder at a difficult moment, it always stays with you even if you can't consciously remember. Like an imprint on the spirit, or on the soul, if you believe in souls.