A good quote if you don't have it;
"As long as the child will be trained not by love, but by fear, so long will humanity live not by justice, but by force. As long as the child will be ruled by the educator?s threat and by the father?s rod, so long will mankind be dominated by the policeman?s club, by fear of jail, and by panic of invasion by armies and navies.?
-- Boris Sidis, from A lecture on the abuse of the fear instinct in early education in Journal of Abnormal Psychology, 1919