The famous actor Gregory Peck once was standing in line with a friend, waiting for a table in a crowded Los Angeles restaurant. They had been waiting for some time; the diners seemed to be taking their time eating, and new tables weren't opening up very fast. They weren't even that close to the front of the line. Peck's friend became impatient, and he said to Gregory Peck, "Why don't you tell the maitre d' who you are?"
Gregory Peck responded with great wisdom. "If you have to tell them who you are, then you aren't."
(Extraordinary Faith for Ordinary Time by Larry R. Kalajainen, in eSermons.com)