You gain virtually nothing in shipping product that just barely satisfies the corporate standard over a product that just fails. Get on target; don't just stay in-spec.
Genichi Taguchi
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 on our business. He is a part of it. We are not doing him a favor by serving him. He is doing us a favor by giving us an opportunity to do so.