"A customer is the most important visitor on our premises.   He is not dependent on us. We are dependent on him. He is   not an interruption of our work. He is the purpose of it. He is   not an outsider to our business. He is part of it. We are not   doing him a favour by serving him. He is doing us a favour   by giving us the opportunity to do so." (Mahatma Gandhi 1869-1948)