SIGMUND FREUD
'(<a href="http://www.j-archive.com/media/2006-10-17_J_18.jpg" target="_blank">Sarah of the Clue Crew is in the library of the Freud Museum, Vienna, Austria.</a>)  I'm holding a first edition of Freud's 1923 classic work, <a href="http://www.j-archive.com/media/2006-10-17_J_18a.jpg" target="_blank">"Das Ich und das Es"</a>, translated in 1927 as these 2 words'
id & ego