I had not at first proposed to devote a whole volume to sexual inversion.
It may even be that I was inclined to slur it over as an unpleasant
subject, and one that it was not wise to enlarge on. But I found in time
that several persons for whom I felt respect and admiration were the
congenital subjects of this abnormality. At the same time I realized that
in England, more than in any other country, the law and public opinion
combine to place a heavy penal burden and a severe social stigma on the
manifestations of an instinct which to those persons who possess it
frequently appears natural and normal. It was clear, therefore, that the
matter was in special need of elucidation and discussion.

There can be no doubt that a peculiar amount of ignorance exists regarding
the subject of sexual inversion. I know medical men of many years' general
experience who have never, to their knowledge, come across a single case.
We may remember, indeed, that some fifteen years ago the total number of
cases recorded in scientific literature scarcely equaled those of British
race which I have obtained, and that before my first cases were published
not a single British case, unconnected with the asylum or the prison, had
ever been recorded. Probably not a very large number of people are even
aware that the turning in of the sexual instinct toward persons of the
same sex can ever be regarded as inborn, so far as any sexual instinct is
inborn. And very few, indeed, would not be surprised if it were possible
to publish a list of the names of sexually inverted men and women who at
the present time are honorably known in church, state, society, art, or
letters. It could not be positively affirmed of all such persons that they
were born inverted, but in most the inverted tendency seems to be
instinctive, and appears at a somewhat early age. In any case, however, it
must be realized that in this volume we are not dealing with subjects
belonging to the lunatic asylum, or the prison. We are concerned with