CHAPTER II

Locke: The Conduct of the Understanding, Bohn's Library Edition, Vol. I, p. 72; also, passim.

Locke: Op. cit., p. 56.

Descartes: Discourse on Method, translated by Veitch, pp. 13-14. Also, passim.

Spinoza: The Improvement of the Understanding, translated by Elwes, Vol. II, p. 4.

Cf. Plato's Republic, Books V-VII, passim.

For further discussion of the meaning of duty, cf. Kant's Critical Examination of the Practical Reason, Book I, Chapter III, translated in Abbott's Kant's Theory of Ethics, p. 164; Bradley's Ethical Studies, Essays II and V; and Sidgwick's Methods of Ethics,