When I seemed to be irritable or sad my father would quote the learned Dr. Knight and then say 'Just go to sleep.' Like all smart aleck kids I thought the advice was silly. But as I've grown older I've realized just how smart Knight was.
In fact I am quite snappy and irritable and I don't know if I'd like to make myself worse in that respect.
Education is not to reform students or amuse them or to make them expert technicians. It is to unsettle their minds widen their horizons inflame their intellects teach them to think straight if possible.