I. Human Nature a Product of the Jungle
II. Egoism and Altruism
III. The Ethics of the Savage
IV. The Ethics of the Ancient
V. Modern Ethics
VI. The Ethics of Human Beings Toward Non-human Beings
VII. The Origin of Provincialism
VIII. Universal Ethics
IX. The Psychology of Altruism
X. Anthropocentric Ethics
XI. Ethical Implications of Evolution
XII. Conclusion