A young boy had just gotten his driving permit. He asked his father,
who was a rabbi, if they could discuss his use of the family car. His
father took him into his study and said, "I'll make a deal with you. You
bring your grades up, study your Talmud a little, get your hair cut and
then we'll talk about it."
After about a month, the boy came back and again asked his father if
they could discuss his use of the car. They again went into the father's
study where the father said - "Son, I've been very proud of you. You have
brought your grades up, you've studied the Talmud diligently, but you 
didn't get your hair cut." The young man waited a moment and then 
replied, "You know Dad, I've been thinking about that. You know Samson 
had long hair, Moses had long hair, Noah had long hair, and even Jesus 
had long hair." 
The rabbi said, "Yes, and everywhere they went, they walked.