this, I plead for the natural and inalienable rights of woman. A
happy marriage is impossible unless there be a perfect
acquaintance between the two before marriage--a knowledge of each
other's ways, habits and character. And I have not flinched from
any of the consequences involved in this principle. Those who know
me are aware that I have been faithful to this opinion ever since
I reached the age of reason; and in my eyes a young girl who has
committed a fault deserves more interest than she who, remaining
ignorant, lies open to the misfortunes of the future. I am at this
present time a bachelor, and if I should marry later in life, it
will only be to a widow."

Thus was begun the correspondence, and the Duchess ended by lifting
her mask and inviting the writer to visit her; he gladly accepted her
gracious offer to come, not as a literary man nor as an artist, but as
himself. It is a striking coincidence that Balzac accepted this
invitation the very day, February 28, 1832, that he received the first
letter from _l'Etrangere_.

What must have been Balzac's surprise, and how flattered he must have
felt, on learning that his unknown correspondent belonged to the
highest aristocracy of the Faubourg Saint-Germain, and that her
husband was a peer of France under Charles X!

"Madame de Castries was a coquettish, vain, delicate, clever woman,
with a touch of sensibility, piety and _chaleur de salon_; a true
Parisian with all her brilliant exterior accomplishments,
qualities refined by education, luxury and aristocratic
surroundings, but also with all her coldness and faults; in a
word, one of those women of whom one must never ask friendship,