PORT JEFFERSON, N.Y., Nov. 27, 2012 /PRNewswire/ -- The family of Robert Collier, New Thought author who inspired The Secretwith his book, The Secret the Ages , continues the legacy of the prolific writer, advertising pioneer,  and author of what is considered the bible of direct mail marketing, his worldwide best seller, The Robert Collier Letter Book.   Robert Collier Publications (RCPubs), …