¹³ The phrase ‘abducere mentem a sensibus’ (to withdraw one’s mind from the senses) appears in letters to Mersenne (Mar. 1637) [probably, in fact, late April], AT 1. 351; and to Vatier (22 Feb. 1638, AT 1. 560). See Henri Gouhier, La Pensée métaphysique de Descartes (Paris: Vrin, 1962), 51–5; Stephen Menn, Descartes and Augustine (Cambridge: Cambridge University Press, 1998), 220–4.