Who knows what an enigma is? My oh my have aesthetic values changed over the centuries. Post author By Erin Billy Post date 2011-10-03 No Comments on Who knows what an enigma is? Illustration of the word “enigma” using the famous Mona Lisa painting By Erin Billy Founder of TestMagic, Inc. in San Francisco, USA. View Archive → Leave a Reply Cancel replyYou must be logged in to post a comment.