"I thee so I beat thee" is such a perverse context I won't even bother going there.
Saying "No" to your kids and teaching them consequences that arise from their actions is a form of love. Preparing them for the real world is a form of love. Teaching them values and self respect is a form of love.
Beating them and leaving marks is not.
http://mfile.akamai.com/5020/wma/rushlimb.download.akamai.com/5020/shanklin_archives/OK_to_Spank.asx