This is a difficult subject to address you upon, and one which you will
probably reject as unsuited to yourself. There are few qualities that
the possessor is less likely to be conscious of than either selfishness
or unselfishness; because the actions proceeding from either are so
completely instinctive, so unregulated by any appeal to principle, that
they never, in the common course of things, attract any particular
notice. We go on, therefore, strengthening ourselves in the habits of
either, until a double nature, as it were, is formed, overlaying the
first, and equally powerful with it. How unlovely is this in the case of
selfishness, even where there are, besides, fine and striking features
in the general character, and how lovely in the case of unselfishness,
even when, as too frequently happens, there is little comparative
strength or nobleness in its intellectual and moral accompaniments!

You are now young, you are affectionate, good-natured, obliging,
possessed of gay and happy spirits, and a sweetness of temper that is
seldom seen united with so much sparkling wit and lively sensibilities.
Altogether, then, you are considered a very attractive person, and, in
the love which all those qualities have won for you from those around
you, may bring forward strong evidence against my charge of selfishness.
But is not this love more especially felt by those who are not brought
into daily and hourly collision with you. They only see you bright with
good-humour, ready to talk, to laugh, and to make merry with them in any
way they please. They therefore, in all probability, do not think you
selfish. Are you certain, however, that the estimate formed of you by
your nearest relatives will not be the estimate formed of you by even
acquaintance some years hence, when lessened good-humour and
strengthened habits of selfishness have brought out into more striking
relief the natural faults of your character?