t intoxication of his senses by another woman. He then becomes
miserly and disagreeable toward his wife, finding fault with her in
every way, but the innocent and deceived victim finally discovers the
true cause of this change of manner. Some women who are ill-treated in
this way, preserve their love for their husbands, while others never
pardon the slightest infidelity, not even an innocent platonic
affection, in their husbands.

The brutality of a husband toward his wife, when he is in love with
another, often knows no limits. From bad temper, chicanery, contempt
and hatred, he often goes on to blows and even murder, as the annals
of criminology prove too well. Egoistic women who have a lover, also
treat their husbands badly. Owing to their legal subordination and
comparative physical weakness, they reveal their sentiments in a less
brutal form, but malice and bad temper are not wanting. In such cases,
the woman's principal weapon is cunning, which may go as far as
poisoning the husband. More commonly she simply abandons him, to force
him to divorce.

There are many transitions and varieties, but the reactions we have
mentioned are the most common. It is quite natural, when one of the
conjoints falls in love with a third person, for the sexual appetite
to become cold toward the conjoint, and for this frigidity to make her
appear less desirable and show up her defects.

Sexual morality is twice mentioned in the ten commandments of Moses:

Seventh commandment: _Thou shall not commit adultery._

Tenth commandment: _Thy shall not covet thy neighbor's wife, nor his
man servant, nor his maid servant, nor his ox, nor his ass, nor
anything that is thy neighbor's._

In the eleventh commandment of Jesus Christ the words: _Thou shall
love thy neighbor as thyself_, represent approximately the point of
view of modern ethics. Nevertheless contemporary social progress
requires more and better. It is not so exalted as to say "Love those
who persecute you," but it demands a more rational and better
formulated ethics, somewhat as follows: _Thou shall love humanity more
than thyself, and thou shalt seek thy happiness in the welfare of its
future._ Such a formula expresses the commandment of sexual ethics as
we have defined it.

In the commandments of Moses the wife is regarded as property, and the
desire for the wife of one's neighbor is threatened with divine
punishment inasmuch as it covets the property of one's neighbor. When