Quotes 

Is there a resource that identifies famous advertising quotes?

• Visit the University of Texas at Austin's web site to search for quotes by subject.
• Visit Zenith Media's web site for interactive advertising and marketing quotes, as well as other historic media quotes.

Who said, "I know that half the money I spend on advertising is wasted, but I can never find out which half"?

This quote is most often attributed to John Wanamaker, but according to David Ogilvy's book, Confessions of an Advertising Man, it was first said by Lord Leverhulme of Unilever.