A strong sense of identity gives man an idea he can do no wrong; too little accomplishes the same.
I know lots and lots and lots of vegetarians who think it's perfectly all right to kill animals for food to eat, but don't do it because they think all the ways in which it's done are wrong.
In the East there is a gap between the top of a wall and underside of a roof; it acts as a screen, and the Chinese were able to use it as they wished.