I flatter myself that however contemptible the Lives of the Criminals, etc., may seem in the eyes of those who affect great wisdom and put on the appearance of much learning, yet it will not be without its uses amongst the middling sort of people, who are glad to take up with books within the circle of their own comprehension.  It ought to be the care of all authors to treat their several subjects so that while they are read for the sake of amusement they may, as it were imperceptibly, convey notions both profitable and just.  The adventures of those who, for the sake of supplying themselves with money for their debaucheries, have betaken themselves to the desperate trade of knights of the road, often have in them circumstances diverting enough and such as serve to show us what sort of amusements they are by which vice betrays us to ruin, and how the fatal inclination to gratify our passions hurries us finally to destruction.

I would not have my readers imagine however, because I talk of rendering books of this kind useful, that I have thrown out any part of what may be styled interesting.  On the contrary, I have carefully preserved this and as far as the subject would give me leave, improved it, but with this caution always, that I have set forth the entertainments of vice in their proper colours, lest young people might be led to take them for innocent diversions, and from figures not uncommon in modern authors, learn to call lewdness gallantry, and the effects of unbridled lust the starts of too warm an imagination.  These are notions which serve to cheat the mind and represent as the road of pleasure that which is indeed the highway to the gallows.  This, I conceived, was the use proper to be made of the lives, or rather the deaths of malefactors, and if I have done no other good in writing them, I shall have at least this satisfaction, that I have preserved them from being presented to the world in such a dress as might render the Academy of Thieving their proper title, a thing once practised before, and if one may guess from the general practice of mankind, might probably have been attempted again, with success.  How a different method will fare in the world, time only can determine, and to that I leave it.  Yet considering the method in which I treat this subject, I readily forsaw one objection which occasioned my writing so long a preface as this, in order that it might be fully obviated.

Though in the body of the work itself I have carefully traced the rise of those corrupt inclinations which bring men to the committing of facts within the cognizance of the Law, it still remains necessary that my readers also become acquainted, at least in general, with what those facts are which are so severely punished.  In doing this I shall not speak of matters in the style of a lawyer, but preserve the same plainness of language which, as I thought it the most proper, I have endeavoured throughout the whole piece.