[31]. Cicero, De Oratore, II. 86 seq.

Quintilian, Instit. orat. XI. 2 seq.

[32]. Cf. Enn. IV. L. III. C. XXV. XXX and L. VI.

[33]. Cf. Siebeck: Geschichte der Psychologie, II. p. 314 seq.

[34]. The central sense or sensorium, however, according to Augustine is located in the brain, not in the heart as in Aristotle’s psychology.

[35]. De Trin. L. XIV. C. VII. See also Ferraz,—Psych. de St. Augustin, 2nd ed.

[36]. Augustine does not mean to limit what follows to mathematical truths, but according to his psychology the same would be true of anything that we are liable to forget.

[37]. De Musica, L. VI. C. IV.

[38]. Conf. L. X. C. XIX. Pusey’s translation.

[39]. Conf. L. X. C. VIII.