The glow of the Kabbalah

Students of literature, philosophy, and religion who have any
sympathy for the occult sciences might well pay some attention to the
Kabalah of the Hebrew rabbis of ancient times; well whatever
the religion held by the investigator, will not only gain in knowledge,
but it will broaden your visions about life and destiny, by comparison of
other forms of religion with the beliefs and doctrines in which it has been
nurtured, or that he has adopted after he has reached middle age and the
powers of discretion. Being fully convinced of the good that derives from it,
I wish to draw attention to the dogmas of the old Hebrew Kabbalah. I had the
fortune to be drawn to this study in a somewhat recondite way, at a period
early in life, and I have had occasion to spend a little time in
subsequent years to collect some knowledge of this philosophy
Hebrew religious; my information on the matter has been augmented by the
fact of being a member of "The Rosicrucian Society". However, the books
Kabbalistic are very numerous and long, and furthermore they can only be
studied in Rabbinic and Chaldean Hebrew, so I feel today
less confident of my knowledge of Kabalah than I was before
twenty years ago, when this essay was first published...