Jeanette Winterson said this quote

Even now when I'm furious, what I would like to do is to punch the infuriating person flat on the ground. That solves nothing I know, and I spent a lot of time understanding my own violence, which is not of the pussycat kind. There are people who could never commit murder; I am not one of those people. It's better to know it, better to know who you are, and what lies in you, and what you could do, might do, under extreme provocation.