Levitt emphasised the need for a company to achieve a balanced orientation by including marketing in its strategy; he focused on the need for a marketing outlook to pervade an organisation and provide a necessary counterbalance to a preoccupation with production. His landmark article expounding this theory, Marketing myopia, appeared in Harvard Business Review in 1960 and is one of the most requested reprints from that journal, having sold over 500,000 copies. Subsequently, Levitt reiterated and expanded his theory in severalarticles and books. These partly focus on the methodology of implementing the marketing mode, including the proposition of a 'marketing matrix' for assessing the degree of marketing orientation existing in a company. They also explore the theory behind the marketing concept and delineate some of its limitations and problems. Other works concentrate on such topics as the 'industrialisation of service' (examining the potential benefits of applying the production line and quality control methods of industry to service provision), the nature of the product, advertising and globalisation.