A philosopher, having made an appointment to dispute with Nasrudin, called and found him away from home. Infuriated, he picked up a peice of chalk and wrote Stupid Oaf on Nasrudin’s gate.
As soon as he got home and saw this, the Mulla rushed to the philosopher’s house. I had forgotten, he said, that you were to call. And I apologize for having not been at home. Of course, I remembered the appointment as soon as I saw that you had left your name on my door.
This spiritual story is from the book The Exploits of the Incomparable Mulla Nasrudin by Idries Shah.