A priest who was walking through a small town saw a blackboard outside the front door of a school. It had been washed ant put out to dry in the open air.
There was a piece of chalk at the foot of the blackboard, so the priest took it and wrote in large letters, 'I'm a priest and I pray for you all.'
A lawyer happened to pass next and when he saw what the priest had written, he added under it, 'I'm a lawyer and I defend you all.'
Then a doctor came by, took the piece of chalk and wrote on the blackboard, 'I'm a doctor and I cure you all.'
Finally an ordinary citizen stopped, looked at what the others had written, thought for a few seconds and then added, 'I am an ordinary citizen and I play for you all.'