2024 Reprint of the 1928 Edition. The marketing strategies for all future wars would be based on the CPI model. Over the next half century, Bernays, combining the techniques he had learned in the CPI with the ideas of Lippmann and Freud, fashioned a career as an outspoken proponent of the engineering of consent for political and corporate influence of the population, earning the moniker “father of public relations.”.