I hurt myself deeply, though at the time I had no idea how deeply. 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-centred, 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.
Haruki MurakamiHatred is like a long, dark shadow. Not even the person it falls upon knows where it comes from, in most cases. It is like a two-edged sword. When you cut the other person, you cut yourself. The more violently you hack at the other person, the more violently you hack at yourself. It can often be fatal. But it is not easy to dispose of. Please be careful, Mr.Okada. It is very dangerous. Once it has taken root in your heart, hatred is the most difficult think in the world to shake off.
Haruki Murakami