When Napoleon dictated or related to his friends in St. Helena the facts
which they have reported he was out of the world,--he had played his
part. Fortune, which, according to his notions, had conferred on him all
his power and greatness, had recalled all her gifts before he sank into
the tomb. His ruling passion would induce him to think that it was due
to his glory to clear up certain facts which might prove an unfavourable
escort if they accompanied him to posterity. This was his fixed idea.
But is there not some ground for suspecting the fidelity of him who
writes or dictates his own history? Why might he not impose on a few
persons in St. Helena, when he was able to impose on France and Europe,
respecting many acts which emanated from him during the long duration of
his power? The life of Napoleon would be very unfaithfully written were
the author to adopt as true all his bulletins and proclamations, and all
the declarations he made at St. Helena. Such a history would frequently
be in contradiction to facts; and such only is that which might be
entitled, 'The History of Napoleon, written by Himself'.

I have said thus much because it is my wish that the principles which
have guided me in the composition of these Memoirs may be understood.
I am aware that they will not please every reader; that is a success to
which I cannot pretend. Some merit, however, may be allowed me on
account of the labour I have undergone. It has neither been of a slight
nor an agreeable kind. I made it a rule to read everything that has been
written respecting Napoleon, and I have had to decipher many of his
autograph documents, though no longer so familiar with his scrawl as
formerly. I say decipher, because a real cipher might often be much more
readily understood than the handwriting of Napoleon. My own notes, too,
which were often very hastily made, in the hand I wrote in my youth, have
sometimes also much embarrassed me.