The corrigenda were originally inserted before the Foreword; they have been implemented, and moved to the end of the text for reference.

The advertisements were originally printed on either side of the title page; they have been moved to the end of the text.

The following sentence, which seems to be missing one or more words, has been retained as printed:

Yet synchronous with this the man of ideas and ideals that he kept to himself however; that he divulged to no one.

Both “half way” and “half-way” are used.

The following typographical errors and inconsistencies have been corrected:

Title page:
“Personal Law of the Mohammedans,” etc
changed to
“Personal Law of the Mohammedans,” etc.

Page 9:
South American Guacho is not
changed to
South American Gaucho is not

Page 9:
adapted for idealistic minds.
changed to
adapted for idealistic minds?

Page 27:
the orginator of a new
changed to
the originator of a new

Page 32:
(an under rather than an over-estimate)
changed to
(an under- rather than an over-estimate)

Page 33:
God’s omnipresence and omipotence had made
changed to
God’s omnipresence and omnipotence had made

Page 56:
each a mighty voice,
changed to
each a mighty voice,”

Page 56:
blackness that prevades the very soul
changed to
blackness that pervades the very soul

Page 57:
grandeur and appaling sameness
changed to
grandeur and appalling sameness

Page 66:
truths are only found in the depths of the thought.
changed to
truths are only found in the depths of the thought.”

Page 72:
were much in repute, when both,
changed to
were much in repute; when both,

Page 82:
secrets of God neither do I say
changed to
secrets of God, neither do I say

Page 87:
to hurl inuendoes, anathemas
changed to
to hurl innuendoes, anathemas

Page 91:
known as Aeneas Sylvius (Pius Aeneas):
changed to
known as Æneas Sylvius (Pius Æneas):

Page 94:
the sacred reduit and rallying ground
changed to
the sacred rÉduit and rallying ground

Page 96:
awakening of the spirit of commerce
changed to
awakening of the spirit of commerce.

Page 103:
I also will wait it with you.
changed to
I also will wait it with you.”

Page 125:
Islam, in fact is above
changed to
Islam, in fact, is above

Page 130:
In a great measure pologamy is much more
changed to
In a great measure polygamy is much more

Page 134:
all the Mutalazite doctors
changed to
all the Mu’tazilite doctors

Page 135:
that of the Mutalazite doctors
changed to
that of the Mu’tazilite doctors

Page 139:
She is only too willing, all, in fact,
changed to
She is only too willing; all, in fact,

Page 146:
ascertain what is knowledge?”
changed to
ascertain what is knowledge”?

Page 147:
“Newton, Bacon, Liebnitz, Montesquieu, and myself.”
changed to
“Newton, Bacon, Leibnitz, Montesquieu, and myself.”

Page 156:
other creeds be apprised
changed to
other creeds be appraised

All other peculiarities and inconsistencies of spelling, punctuation and capitalisation have been retained as printed.