New product and new types of service are generated, not by asking the consumer, but by knowledge, imagination, innovation, risk, trial and error on the part of the producer, backed by enough capital to develop the product or service and to stay in business during the learn months of introduction.

Manage the cause, not the result.

Quality is everyone's responsibility.

Profit in business comes from repeat customers

You can expect what you inspect.

The only useful function of a statistician is to make predictions, and thus to provide a basis for action.

Without theory, there are no questions.