Title for "Doctor Faustus" CDW?

I cant think of a Title for my CDW on the play Doctor Faustus by Christopher Marlowe? if you havent read it, the play tell about a doctor who wants to learn dark magic, but if he want to learn it he has to trade his soul to the devil and cant call out to god for repentance. so the CDW is going to be about good and evil, and how his choices effect him. any suggestions?