Book I, Chapter Iii.

Chesterton: Napoleon of Notting Hill, p. 162.

G. E. Moore: Principia Ethica, Chapter III, Sect. 58-63.

Locke: Op. cit., p. 29.

There is an excellent account of the questions that lie on the border between ethics and jurisprudence in S. E. Mezes's Ethics, Descriptive and Explanatory, Chapter XIII.

Kant: Fundamental Principles of the Metaphysic of Morals, translated in Abbott's Kant's Theory of Ethics, p. 47.

H. G. Lord: The Abuse of Abstraction in Ethics, in Essays Philosophical and Psychological in Honor of William James, pp. 376-377.

John Davidson: A Rosary, pp. 77, 82.

Maurice Maeterlinck: The Measure of the Hours, translated by A. T. de Mattos, p. 151. The essay in this volume, entitled "Our Anxious Morality," charges rationalism with destroying the romantic and mystical element in life.