Haruki Murakami said this quote

“ I should have learned many things from that experience, but when I look back on it, all I gained was one single, undeniable fact. That ultimately I am a person who can do evil. I never consciously tried to hurt anyone, yet good intentions notwithstanding, when necessity demanded, I could become completely self-centered, even cruel. I was the kind of person who could, using some plausible excuse, inflict on a person I cared for a wound that would never heal.College transported me to a new town, where I tried, one more time, to reinvent myself. Becoming someone new, I could correct the errors of my past. At first I was optimistic: I could pull it off. But in the end, no matter where I went, I could never change. Over and over I made the same mistake, hurt other people, and hurt myself in the bargain.Just after I turned twenty, this thought hit me: Maybe I've lost the chance to ever be a decent human being. The mistakes I'd committed—maybe they were part of my very makeup, an inescapable part of my being. I'd hit rock bottom, and I knew it. ”