The very quality of beautifulness or ugliness depends on the existence of its counterpart. If there was no night then there wouldn't be day because it would be day anytime, everytime and without the distinction with night day would cease to exist. Similarly if there was no such thing called ugly (as we define it ) then there would be nothing beautiful i.e. everything would be just things not beautiful or ugly. In that sense everything is beautiful as well as ugly , in fact, they are both and aren't any of those at the same time.