But notwithstanding all this uncertainty, history is
not the less necessary to be known, as the best histories are taken for
granted, and are the frequent subjects both of conversation and writing.
Though I am convinced that Caesar's ghost never appeared to Brutus, yet I
should be much ashamed to be ignorant of that fact, as related by the
historians of those times. Thus the Pagan theology is universally
received as matter for writing and conversation, though believed now by
nobody; and we talk of Jupiter, Mars, Apollo, etc., as gods, though we
know, that if they ever existed at all, it was only as mere mortal men.
This historical Pyrrhonism, then, proves nothing against the study and
knowledge of history; which, of all other studies, is the most necessary
for a man who is to live in the world. It only points out to us, not to
be too decisive and peremptory; and to be cautious how we draw inferences
for our own practice from remote facts, partially or ignorantly related;
of which we can, at best, but imperfectly guess, and certainly not know
the real motives. The testimonies of ancient history must necessarily be
weaker than those of modern, as all testimony grows weaker and weaker, as
it is more and more remote from us. I would therefore advise you to study
ancient history, in general, as other people, do; that is, not to be
ignorant of any or those facts which are universally received, upon the
faith of the best historians; and whether true or false, you have them as
other people have them. But modern history, I mean particularly that of
the last three centuries, is what I would have you apply to with the
greatest attention and exactness. There the probability of coming at the
truth is much greater, as the testimonies are much more recent; besides,
anecdotes, memoirs, and original letters, often come to the aid of modern
history. The best memoirs that I know of are those of Cardinal de Retz,
which I have once before recommended to you; and which I advise you to
read more than once, with attention. There are many political maxims in
these memoirs, most of which are printed in italics; pray attend to, and
remember them. I never read them but my own experience confirms the truth
of them. Many of them seem trifling to people who are not used to
business; but those who are, feel the truth of them.

It is time to put an end to this long rambling letter; in which if any
one thing can be of use to you, it will more than pay th