http://columbia.thefreedictionary.com/Langer,+Susanne+Knauth
http://en.wikipedia.org/wiki/Susanne_Langer
_ Brand New Key
http://www.youtube.com/watch?v=xd7MVwET0QY
_ Brand New Key
http://www.youtube.com/watch?v=owIBVSendIY
_ Brand New Key - Hannah Montana
http://www.youtube.com/watch?v=DejVxkk51oY
_ Faith, Evolution, and Programming Languages - 1 hr 7 min
http://video.google.com/videoplay?docid=-4167170843018186532
_ In Logic, The Symbolic Dream
http://video.google.com/videoplay?docid=-5857767922474722515
_ Test 4: Truth Trees 1
http://www.youtube.com/watch?v=UDqq2GohMoM