[270] The empirical interpretation of evolution is that adopted by the majority of evolutionists, but is not essential to the truth of the theory. A protest against it is entered by Mr Wallace, though in the somewhat crude form of postulating supernatural interference for the production of certain classes of phenomena (cf. Contributions to the Theory of Natural Selection, p. 359), at the same time that his conception of nature does not seem to differ otherwise from that of Häckel.
[271] The reference in the above to Kant, Werke, iii. 438 ff., is obvious; but it is nevertheless a true account of the principles involved in the theory of evolution.
[272] Cf. Stirling, Secret of Hegel, ii. 615: "One grand system, unity of type, all this must be postulated from the very constitution of human reason; but from the very constitution of experience as well, it can never be realised in experience."
[273] Bau und Leben des socialen Körpers, ii. 68.
[274] Cf. Fouillée, Critique des systèmes de morale contemporains, p. 13 ff.
[275] Boswell's Life of Johnson, chap. liv.
[276] Kant, Werke, v. 187 (Kr. d. Urt., Einl. iv.)
[277] Descartes, Princ. phil., iii. 3, i. 28; Bacon, De augm., iii. 5, Novum organum, ii. 2.
[278] Cf. Kant, Werke, v. 387 (Kr. d. Urt., § 65).
[279] Historische Beiträge zur Philosophie, iii. 165.