The relations of this work to works preceding it in the series are such as to involve frequent reference. Containing, as it does, the outcome of principles set forth in each of them, I have found it impracticable to dispense with re-statements of those principles. Further, the presentation of them in their relations to different ethical theories, has made it needful, in every case, briefly to remind the reader what they are, and how they are derived. Hence an amount of repetition which to some will probably appear tedious. I do not, however, much regret this almost unavoidable result; for only by varied iteration can alien conceptions be forced on reluctant minds.

June, 1879.


[CONTENTS.]

[CHAPTER I.]
Page.
Conduct in General1
[CHAPTER II.]
The Evolution of Conduct7
[CHAPTER III.]
Good and Bad Conduct23
[CHAPTER IV.]
Ways of Judging Conduct54
[CHAPTER V.]
The Physical View75
[CHAPTER VI.]
The Biological View88
[CHAPTER VII.]
The Psychological View121
[CHAPTER VIII.]
The Sociological View157
[CHAPTER IX.]
Criticisms and Explanations178
[CHAPTER X.]
The Relativity of Pains and Pleasures206
[CHAPTER XI.]
Egoism versus Altruism221
[CHAPTER XII.]
Altruism versus Egoism237
[CHAPTER XIII.]
Trial and Compromise258
[CHAPTER XIV.]
Conciliation285
[CHAPTER XV.]
Absolute and Relative Ethics304
[CHAPTER XVI.]
The Scope of Ethics332

[THE DATA OF ETHICS.]