In the photo within the linked thread above of Mr. Anderson`s PPG business card his first name is printed as "John", but within the article he is called "Jack". I assume that Jack is either a nickname OR his middle name that he has preferred to be called by. Not that it matters here, but it does to John/ Jack. I get confused sometimes in associating individuals who use this two-name identity OR will offend someone who prefers to be called by their nickname or middle name, and they correct me when I address them with their given name. I have also gone the other way when I address someone by an societal-accepted shorter or alternate version of a name, like Bob for Robert or Lissy for Melissa, when they prefer to be called by their given full formal name, and they will "correct" me; sometimes nicely and politely, sometimes curtly and sternly. What`s in a name?? Apparently that proper identify means a lot to some individuals.
(You can call me Captain Obvious; just don`t call me late to a meal!)
Again, though, we are just trying to identify who originally coined the phrase, "Find something you like and use it often.", and we have: John/Jack Anderson.