[1] _Confess,_ iv. x. ch. 13; _De Trinitate,_ vi. ch. 10; _Epist._ 3, 18; _De civitate Dei,_ xxii. ch. 19 (in _Opera,_ ed. dei Maurini, Paris, 1679-1690, vols. i. ii. vii. viii.). [2] _Summa theol._ I. 1. xxxix. 8; I. 11. xxvii. I (ed. Migne, i. cols. 794-795; ii. col. 219). [3] Comparetti, _Virg. nel medio evo,_ vol. i. _passim._ [4] _De vulg. eloq._ (ed. Rajna), bk. ii. ch. 4. [5] _Vita nuova,_ ch. 25. [6] _Convivio,_ i. 1. [7] _Prohemio al Condestable de Portugal,_ 1445-1449 (in _Obras,_ ed. Amador de los Rios, 1852), § 3. [8] _De vulg. eloq._ bk. i. ch. 3. [9] Lately reprinted under the editorship of padre M. Fernandez Garcia, Ad claras Aquas (Quarracchi), 1902. [10] Windelband, _Gesch. d. Phil._ ii. pp. 251-270; De Wulf, _Philos, médiév.,_ Louvain, 1900, pp. 317-320. [11] _Dialogi di amore, composti per Leone, medico ...,_ Rome, 1535. [12] _Libro di natura e d' amore,_ Venice, 1525 (Ven. 1563). [13] _De divina proportione,_ Venice, 1509. [14] G. P. Lomazzo, _Trattato dell' arte della pittura, scultura ed architettura,_ Milan, 1585, i. I, pp. 22-23. [15] Aug. Niphi, _De pulcro el amore,_ Rome, 1529. [16] _Il Minturno o vero de la belleza_ (in _Dialoghi,_ ed. Guasti, vol. iii.). [17] _Ration. philos._ part iv.; _Poeticor._ (Paris, 1638), art. vii. [18] Fr. Robortelli, _In librum Arts, de arte poet, explicationes,_ Florence, 1548; Lud. Castelvetro, _Poetica d' Aristotele vulgarizzata ed esposta,_ 1570 (Basle, 1576), part i. particella iv. pp. 29-30. [19] Bern. Segni, _Rettor. e poet. trad._ Florence, 1549; Vinc. Madii, _In Arist.... explanationes,_ 1550; Petri Victorii, _Commentarii,_ etc., Florence, 1560. [20] _Poetica,_ 1561 (ed. 3, 1586), i. I; vii. 3. [21] _Annotationi net libro della Poetica,_ Venice, 1575, preface. [22] _Gerus. lib._ i. 3. [23] _Poetic,_ ch. I, art. 1. [24] _Poetica trad_. preface. [25] _Pensieri diversi_, bk. x. ch. 18. [26] La Ménardière, _Poétique_, Paris, 1640; Le Bossu, _Traité du poème épique_, Paris, 1675. [27] Borinski, _Poet. d. Renaiss._ p. 26. [28] Hyeron. Frascatorii _Opera,_ Venetian edition, Giunti, 1574, pp. 112-120. [29] _Poet., ed. cit._ i. 1; ii. 1; iii. 7; v. I (pp. 64, 66, 71-72, 208, 580). [30] _Annotationi,_ preface. [31] _Philosophia antiqua poetica,_ Madrid, 1596 (reprinted Valladolid 1894). [32] Francesco Patrici, _Della poetica, la Deca disputata,_ "in which by history, by reason, by authority of the greatest worthies of antiquity, is shown the falsity of the most received opinions concerning Poetry down to our own day." Ferrara, 1586. III FERMENTS OF THOUGHT IN THE SEVENTEENTH CENTURY [Sidenote: _New words and new observations in the seventeenth century_]