 Further reading: For Descartes’ response to the charges of circularity: see the Fourth Replies. For texts concerning his final solution to hyperbolic doubt: see Fifth Meditation; Second Replies; letter to Regius (24 May 1640). For a treatment of the Fourth Meditation proof of the C&amp;D Rule, see Newman (1999). For discussions of the role of the Fifth Meditation in the eventual, self-evident apprehension of God, see Newman and Nelson (1999), Nolan (2005), and Nolan and Nelson (2006). For examples of unbounded doubt interpretations, see Carriero (2009), Curley (1978 and 1993), DeRose (1992), Loeb (1992), Newman (2012), Newman and Nelson (1999), Sosa (1997a and 1997b), and Van Cleve (1979). For examples of bounded doubt interpretations, see Broughton (2002), Doney (1955), Della Rocca (2005), Kenny (1968), Morris (1973), Rickless (2005), and Wilson (1978). For alternative schemes for cataloguing interpretations, see Hatfield (2006) and Newman and Nelson (1999). For an anthology devoted largely to the Cartesian Circle, see Doney (1987). For discussions of the role of truth in perfect knowledge, see Frankfurt (1970 and 1978), Hatfield (2006), Lennon (2008), Loeb (1992), and Newman and Nelson (1999).