This is one class everyone could benefit from.

Important moral questions are never black and white

"Everybody can be great. Because anybody can serve. You don't have to have a college degree to serve. You don't have to make your subject and your verb agree to serve.... You don't have to know the second theory of thermodynamics in physics to serve. You only need a heart full of grace. A soul generated by love." ~ Martin Luther King, Jr.

You have to challenge your own thinking on a regular basis in order to understand yourself and where you sit on certain issues. Without a challenge you forget why you think that way .
Worst of all you don't give yourself a chance to change your mind when your wrong.