Are you saying I ought to disobey my father? I don't think that's right. He'd be very irate if I did, and children are supposed to do as their parents say.
It's different here. It's impossible to follow all the rules from home. Some of the muggles here are utterly horrid, but a few of them have been decent to me. One of them helped me when I thought that a motor-car was going to kill me. I didn't expect that of him. He was a good sort.