You know the old story?
Johnny in tears "I don't want to go to school"
Mother "You've got to go"
This continues for some time with Johnny getting more and more upset, screaming, lying on the floor and kicking his legs in the air.
Finally his mother says firmly:
"Johnny, you HAVE to go."
Johnny "Why?"
Mother "because you're the headmaster"
RtS (every one a little-if old- gem)