Outdoor Advertising, Subliminal Advertising, Search Engine Marketing, Advertising, Viral Marketing, Guerilla Marketing, Social Media, Email Marketing, Event Marketing, Experiential Marketing, Evangelism

Words were originally magic and to this day have retained much of their ancient magical power.
Sigmund Freud in Introductory Lectures on Psychoanalysis, 1916
 
One Picture is Worth Ten Thousand Words.
Fred R. Barnyard in the advertising industry magazine Printers' Ink, March 10, 1927