"If you want your children to be generous, you must first allow them to be selfish. If you want them to be disciplined, you must first allow them to be spontaneous. If you want them to be hard-working, you must first allow them to be lazy. This is a subtle distinction, and hard to explain to those who criticize you. A quality cannot be fully learned without understanding its opposite. "

William Martin from an email about the "2010 Rethinking Everything Conference"