e has lately published, and which I will send you by the first
opportunity, says very justly that simulation is a STILETTO,--not only an
unjust but an unlawful weapon, and the use of it very rarely to be
excused, never justified. Whereas dissimulation is a shield, as secrecy
is armor; and it is no more possible to preserve secrecy in business,
without same degree of dissimulation, than it is to succeed in business
without secrecy. He goes on, and says, that those two arts of
dissimulation and secrecy are like the alloy mingled with pure ore: a
little is necessary, and will not debase the coin below its proper
standard; but if more than that little be employed (that is, simulation
and cunning), the coin loses its currency, and the coiner his credit.

Make yourself absolute master, therefore, of your temper and your
countenance, so far, at least, as that no visible change do appear in
either, whatever you may feel inwardly. This may be difficult, but it is
by no means impossible; and, as a man of sense never attempts
impossibilities on one hand, on the other, he is never discouraged by
difficulties: on the contrary, he redoubles his industry and his
diligence; he perseveres, and infallibly prevails at last. In any point
which prudence bids you pursue, and which a manifest utility attends, let
difficulties only animate your industry, not deter you from the pursuit.
If one way has failed, try another; be active, persevere, and you will
conquer. Some people are to be reasoned, some flattered, some
intimidated, and some teased into a thing; but, in general, all are to be
brought into it at last, if skillfully applied to, properly managed, and
indefatigably attacked in their several weak places. The time should
likewise be judiciously chosen; every man has his 'mollia tempora', but
that is far from being all day long; and you would choose your time very
ill, if you applied to a man about one business, when his head was full
of another, or when his heart was full of grief, anger, or any other
disagreeable sentiment.

In order to judge of the inside of others, study your own; for men in
general are very much alike; and though one has one prevailing passion,
and another has another, yet their operations are much the same; and
whatever engages or disgusts, pleases or offends you, in others will,
'mutatis mutandis', engage, disgust, please, or offend others, in you.
Observe with the utmost attention all the operations of your own m