“Because of the importance of attitudes, ability to train thought is not achieved merely by knowledge of the best forms of thought. Moreover, there are no set exercises in correct thinking whose repeated performance will cause one to be a good thinker…. Knowledge of the methods alone will not suffice; there must be the desire, the will to employ them. This desire is an affair of personal disposition.”
Excerpted from: Wiggins, Grant, and Jay McTighe. Understanding by Design. Alexandria, VA: ASCD, 1998.