to keep the author and the lady he
addressed in impenetrable obscurity. To raise the veil from a man of
so much worth and genius, as well as to carry out his idea of doing
good, is one of the reasons which have led to the present preparation
and publication of this book.

A. C. M.

CONTENTS.

LETTER I.

Of the Sources of Credulity, and of the Motives which should
lead to an Examination of Religion, Page 1

LETTER II.

Of the Ideas which Religion gives us of the Divinity, 29

LETTER III.

An Examination of the Holy Scriptures, of the Nature of the
Christian Religion, and of the Proofs upon which Christianity is
founded, 46

LETTER IV.

Of the fundamental Dogmas of the Christian Religion, 76

LETTER V.

Of the Immortality of the Soul, and of the Dogma of another
Life, 91

LETTER VI.

Of the Mysteries, Sacraments, and Religious Ceremonies of
Christianity, 120

LETTER VII.

Of the pious Rites, Prayers, and Austerities of Christianity, 136

LETTER VIII.

Of Evangelical Virtues and Christian Perfection, 154

LETTER IX.

Of the Advantages contributed to Government by Religion, 184

LETTER X.

Of the Advantages Religion confers on those who profess it, 211

LETTER XI.

Of Human or Natural Morality, 233

LETTER XII.

Of the small Consequence to be attached to Men's Speculations,
and the Indulgence which should be extended to them, 255

LETTERS TO EUGENIA.

LETTER I.

Of the Sources of Credulity, and of the Motives which should lead
to an Examination of Religion.

I am unable, Madam, to express the grievous sentiments that the
perusal of your letter produced in my bosom. Did not a rigorous duty
retain me where I am, you would see me flying to your succor. Is it,
then, true that Eugenia is miserable? Is even she tormented with
chagrin, scruples, and inquietudes? In the midst of opulence and
grandeur; assured of the tenderness and esteem of a husband who adores
you; enjoying at court the advantage, so rare, of being sincerely
beloved by every on