1
Fichte, Grundlage der gesammten Wissenschaftslehre. Theil. i., § 1. Ed. Berlin, 1845, p. 92.
2
Treatise of Human Nature, vol. i., p. 467.
3
Saggio sull' origine delle idee, p. 5, c. iv., tr. 11, p. 285, where he cites the theoretico-chemical observations on the cataracts of those born blind, by Luigi de' Gregori, professor of chemistry and opthalmia, published at Rome in 1826.
4
Wissenschaftslehre, Th. 1, § 1
9
Descartes. Principes de la Philosophie, 1ière partie.
10
Descartes. Principes de la Philosophie, 1ière partie, N. 7.
11
Les Principes de la Philosophie. Preface, p. 13.
12
Les Principes de la Philosophie. 1ière. partie, N. 9.
13
Essay on the Human Understanding. Prologue.
14
Essay on the Human Understanding. Book iv., Chap. I., § 1.
15
Essai sur l'Origine des Connaissances. Première partie, C. 1., § 1.