What is a Customer?

I got this out of one of my text books.

I think this is how we should look at everyone around us.

We should treat everone we know or come in contact with just like customers.

What is a Customer?

A Customer is the most important person ever in this office… in person or by mail.
A Customer is not dependent on us… we are dependent on him.
A Customer is not an interruption of our work… he is the purpose of it. We are not doing a favor by serving him… he is doing us a favor by giving us the opportunity to do so.
A Customer is not some to argue or match wits with. Nobody ever won an argument with a customer.
A Customer is a person who brings us his wants. It is our job to handle them profitably to him and others.
- A Repair Shop sign