 Further reading: For important passages in Descartes’ handling of the cogito, see the second and third sets of Objections and Replies. In the secondary literature, see Beyssade (1993), Broughton (2002), Carriero (2009), Cunning (2007), Curley (1978), Frankfurt (1966), Hintikka (1962), Kenny (1968), Markie (1992), Peacocke (2012), Sarkar (2003), Stroud (2008), Vendler (1984), Vinci (1998), Williams (1978), and Wilson (1978).