When you see that a pupil is truly selfish begin at once to treat him.
First find out, if possible, how this trait was developed and then begin
to correct the false notions. Say to the selfish one, “I want you to
study the pupils of this room this week, and tell me of all the
unselfish deeds done that you can make note of, and why you think them
unselfish.” Of course, other pupils will be given similar topics and the
reports, as well as the original requests, will be made in public. These
character studies may be connected with literature in place of the
fictitious personalities which are often studied.
When wishing to find the writer of a note go to work at it privately.
Having once made a threat do not lightly disregard it. Do not give over
to your pupils matters of discipline which you should attend to
yourself.