One useful lesson which we may derive from the detail of these
particulars, is the folly in most cases of imputing pure and unmingled
hypocrisy to man. The human mind is of so ductile a character that,
like what is affirmed of charity by the apostle, it "believeth all
things, and endureth all things." We are not at liberty to trifle with
the sacredness of truth. While we persuade others, we begin to deceive
ourselves. Human life is a drama of that sort, that, while we act our
part, and endeavour to do justice to the sentiments which are put down
for us, we begin to believe we are the thing we would represent.

To shew however the modes in which the delusion acts upon the person
through whom it operates, is not properly the scope of this book. Here
and there I have suggested hints to this purpose, which the curious
reader may follow to their furthest extent, and discover how with
perfect good faith the artist may bring himself to swallow the
grossest impossibilities. But the work I have written is not a
treatise of natural magic. It rather proposes to display the immense
wealth of the faculty of imagination, and to shew the extravagances of
which the man may be guilty who surrenders himself to its guidance.

It is fit however that the reader should bear in mind, that what is
put down in this book is but a small part and scantling of the acts of
sorcery and witchcraft which have existed in human society. They have
been found in all ages and countries. The torrid zone and the frozen
north have neither of them escaped from a fruitful harvest of this
sort of offspring. In ages of ignorance they have been especially at
home; and the races of men that have left no records behind them to
tell almost that they existed, have been most of all rife in deeds of
darkness, and those marvellous incidents which especially astonish the
spectator, and throw back the infant reason of man into those shades