There are a lot of references to this statement in Google Books, but none I could find that had the actual source reference page included. 1969 seems the correct year. Three common references:

Perls, Fritz (1969). Ego, Hunger and Aggression: The beginning of Gestalt Therapy. Random House; New York. Perls, Fritz, compiled and edited by John O. Stevens (1969). Gestalt Therapy Verbatim. Real People Press; Lafyette, CA. Perls, Fritz (1969). In and Out of the Garbage Pail. Real People Press; Lafayette, CA. --Circumspects (talk) 18:27, 27 March 2011 (UTC)Reply

My Observation of a Grammatical Oversight (or error, as it were) edit

In the opening paragraph, the first sentence (which comprises the paragraph) is missing one word. There should be an "a" prior to the word "way." Though perhaps a minor and admittedly pedantic contribution, I believe it is important in establishing Wikipedia as a site on the Web which can ultimately be second to none in at least its grammatical reliabilty. Art Landy (talk) 14:44, 18 November 2011 (UTC)Reply