 The rationality of faith on this model will rest on the rationality of the firmly held theological beliefs in which it consists. As Swinburne notes, if such beliefs are founded on evidence that renders their truth sufficiently more probable than not, then the beliefs concerned may amount to knowledge on a contemporary ‘justified true belief’ fallibilist epistemology, even though they fall short of knowledge on Aquinas’s own criteria, which require that what is known be ‘seen’ (i.e., fully and directly comprehended) (Summa Theologiae 2a2ae 1, 4 &amp; 5 (Aquinas 1265–1273 [2006], 27)). In any case, the reasonableness of faith on this model of faith as (non-basic) theological belief depends on the beliefs concerned being adequately evidentially justified. The claim that this condition is satisfied is defended by John Locke in The Reasonableness of Christianity (1695 [1999]), and, in contemporary philosophy, by Richard Swinburne’s Bayesian approach to the epistemology of Christian belief (see, for example, Swinburne 2003).