A personal story I heard from one of my pastors:

(the pastor speaking) "I knew a guy in high school who was a Christian. Other than that fact, he seemed normal, he was smart and he was a fantastic athlete. One day I took a shot at him, saying "How could an otherwise intelligent guy like you use Jesus as a crutch?"

The guy grabbed me by my shirt collar and pulled me face to face with him, and said, "Jesus isn't a crutch -- He's my legs!", and let me go.

His meaning fell on me like bricks, and I started to re-evaluate what I thought Christianity was. Here was a great, nice, intelligent athletic guy, with seemingly everything in the world going for him, only he looked at it totally differently -- he saw it as God was the only thing "going for him", but everything else had no choice but to obey Him and fall in line."