Marketing is the study and management of exchange relationships. Marketing is used to create, keep and satisfy the customer. With the customer as the focus of its activities, it can be concluded that Marketing is one of the premier components of Business Management - the other being innovation.
The music of the soul is also the music of salesmanship. Exchange value, not truth value counts. On it centers the rationality of the status quo, and all alien rationality is bent to It.
Herbert Marcuse, One Dimensional Man (1964), p. 57