ousy--Its Predominance Among Animals, Savages,
etc, and in Pathological States--An Anti-Social Emotion--Jealousy
Incompatible With the Progress of Civilization--The Possibility of Loving
More Than One Person at a Time--Platonic Friendship--The Conditions Which
Make It Possible--The Maternal Element in Woman's Love--The Final
Development of Conjugal Love--The Problem of Love One of the Greatest Of
Social Questions.

CHAPTER XII.

THE SCIENCE OF PROCREATION.

The Relationship of the Science of Procreation to the Art of Love--Sexual
Desire and Sexual Pleasure as the Conditions of Conception--Reproduction
Formerly Left to Caprice and Lust--The Question of Procreation as a
Religious Question--The Creed of Eugenics--Ellen Key and Sir Francis
Galton--Our Debt to Posterity--The Problem of Replacing Natural
Selection--The Origin and Development of Eugenics--The General Acceptance
of Eugenical Principles To-day--The Two Channels by Which Eugenical
Principles are Becoming Embodied in Practice--The Sense of Sexual
Responsibility in Women--The Rejection of Compulsory Motherhood--The
Privilege of Voluntary Motherhood--Causes of the Degradation of
Motherhood--The Control of Conception--Now Practiced by the Majority of
the Population in Civilized Countries--The Fallacy of "Racial
Suicide"--Are Large Families a Stigma of Degeneration?--Procreative
Control the Outcome of Natural and Civilized Progress--The Growth of
Neo-Malthusian Beliefs and Practices--Facultative Sterility as Distinct
from Neo-Malthusianism--The Medical and Hygienic Necessity of Control of
Conception--Preventive Methods--Abortion--The New Doctrine of the Duty to
Practice Abortion--How Far is this Justifiable?--Castration as a Method of
Controlling Procreation--Negative Eugenics and Positive Eugenics--The
Question of Certificates for Marriage--The Inadequacy of Eugenics by Act
of Parliament--The Quickening of the Social Conscience in Regard to
Heredity--Limitations to the Endowment of Motherhood--The Conditions
Favorable to Procreation--Sterility--The Question of Artificial
Fecundation--The Best Age of Procreation--The Question of Early
Motherhood--The Best Time for Procreation--The Completion of the Divine
Cycle of Life.

CHAPTER I.

THE MOTHER AND HER CHILD.

The Child's Right to Choose Its Ancestry--How This is Effected--The Mother
the Child's Supreme Parent--Motherhood and the Woman Movement--The Immense
Importance of Motherhood--Infant Mortality and