[1] Letters to Balzac and the Princess Elizabeth.
[2] Art poétique (1669-1674).
[3] Letters to Marquis Maffei, about 1720, in Prose e poesie, Venice, 1756, ii. p. cxx.
[4] Sulzer, op. cit. i. p. 50.
[5] Traité du beau (2nd ed., Amsterdam, 1724; Paris ed., 1810).
[6] Essai sur le beau, Paris, 1741.
[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.