 Further reading: On foundationalism: for Descartes’ treatment, see Discourse, First Meditation, and Seventh Objections and Replies; for its treatment by ancients, see Euclid (1956) and Aristotle (Posterior Analytics); by interpreters of Descartes, see Sosa (1997a) and Van Cleve (1979). On Cartesian inference, see Gaukroger (1989) and Hacking (1980). On methodical doubt: for Descartes’ treatment, see Rules, Discourse, First Meditation, and Seventh Replies; by commentators, see Frankfurt (1970), Garber (1986), Larmore (2014), Newman (2006), Williams (1983), and Wilson (1978). On needing reasons for doubt (contrary to direct voluntarism), see Newman (2007). On the analysis-synthesis distinction (closely related to issues of doubt and methodology): see the Second Replies (AT 7:155ff); see also Arnauld (1964, 4:2f), Curley (1986), Galileo (1967, 50f), Hintikka (1978), and Newman (2019).