[1] Letters to Balzac and the Princess Elizabeth.
[3] Letters to Marquis Maffei, about 1720, in _Prose e poesie,_ Venice, 1756, ii. p. cxx.
[5] _Traité du beau_ (2nd ed., Amsterdam, 1724; Paris ed., 1810).
[7] _An Essay concerning Human Understanding_ (French trans. in _Œuvres,_ Paris, 1854), bk. ii. ch. 11, § 2.
[8] _Characteristics of Men, Manners, Opinions, Times,_ 1709-1711.
[9] _Enquiry into the Original of our Ideas of Beauty and Virtue,_ London, 1723.
[11] _Opera philosophica_ (ed. Erdmann), p. 78.
[15] _Essais de Théodicée,_ part. ii. § 148.
[16] Francisci Sanctii, _Minerva seu de causis linguæ latinæ commentarius,_ 1587 (ed. with add. by Gaspare Scioppio, Padua, 1663); cf. bk. i. chs. 2, 9, and bk. iv.
[17] Gasperis Sciopii, _Grammatica philosophica,_ Milan, 1628 (Venice, 1728).
[18] _De dignitate,_ etc., bk. vi. ch. i.
[19] Locke, _Essay,_ etc., bk. lii.; Leibniz, _Nouveaux Essais,_ bk. iii.
[20] _Psychol. empirica_ (Frankfurt and Leipzig, 1738), §§ 138-172.
[21] Joh. Chr. Gottsched, _Versuch einer critischen Dichtkunst,_ Leipzig, 1729.
[22] _Dilucidationes philosophicæ de Deo, anima humana et mundo,_ 1725 (Tübingen, 1768), § 268.
[23] Preface to _Rifless. sul gusto, ed. cit._ p. 75.
[24] Borinski, _Poetik d. Renaiss._ p. 380 note.
[25] Halæ Magdeburgicæ, 1735 (reprinted, ed. B. Croce, Naples, 1900).
[28] _Æsthetica. Scripsit_ Alex. Gottlieb Baumgarten, _Prof. Philosoph., Traiecti eis Viadrum, Impens. Ioannis Christiani Kleyb,_ 1750; 2nd part, 1758.
[38] Ritter, _Gesch. d. Philos._ (Fr. trans., _Hist, de la phil. mod._ iii. p. 365); Zimmermann, _Gesch. d. Æsth._ p. 168; J. Schmidt, _L. u. B._ p. 48.
[39] Danzel, _Gottsched,_ p. 218; Meyer, _L. u. B._ pp. 35-38.
[55] Cf. Wolff, Psych, empir. § 511, and the passage there quoted from Descartes; also §§ 542, 550.
[56] Th. Joh. Quistorp, in _Neuen Bücher-Saal,_ 1745, fasc. 5; _Erweis dass die Poesie schon für sie selbst ihre Liebhaber leichtlich unglücklich machen könne_; and A. G. Baumgarten, _Metaphysica,_ 2nd ed., 1748, preface; cf. Danzel, _Gottsched,_ pp. 215, 221.
[Sidenote: _Vico as inventor of æsthetic science._]
The real revolutionary who by putting aside the concept of probability and conceiving imagination in a novel manner actually discovered the true nature of poetry and art and, so to speak, invented the science of Æsthetic, was the Italian Giambattista Vico.
