President Obama quoted Lincoln in this final speech to the House Democrats before the health care vote. "I am not bound to win, but I'm bound to be true. I'm not bound to succeed, but I'm bound to live up to what light I have." It is worth watching the whole speech or reading the transcript. You can do both here: http://www.huffingtonpost.com/2010/03/20/obama-quotes-lincoln-to-h_n_507124.html