THE DIRT IS ON THE INSIDE
A young boy asked his mother if he could help her wash the windows. She welcomed his offer and told him to begin with the one in the kitchen because it was the dirtiest. He went outside and worked diligently until he thought it was clean. Then with a dry cloth he rubbed until his arms were tired, but the pane of glass still had many smudges. Frustrated, he called his mother and asked her what was wrong. Looking at what he had done, she said with a smile, "Why, you have been spending all your time washing the glass out here. What’s wrong is that the dirt is on the inside!" The boy went into the house, and soon his efforts made the window clean and sparkling.
Source unknown. Acquired from pastorlife.com.