It was my fortune at that time to be obliged to consider my pen as the sole instrument for supplying my current expenses. By the liberality of my bookseller, Mr. George Robinson, of Paternoster Row, I was enabled then, and for nearly ten years before, to meet these expenses, while writing different things of obscure note, the names of which, though innocent and in some degree useful, I am rather inclined to suppress. In May, 1791, I projected this, my favourite work, and from that time gave up every other occupation that might interfere with it. My agreement with Robinson was that he was to supply my wants at a specified rate while the book was in the train of composition. Finally, I was very little beforehand with the world on the day of its publication, and was therefore obliged to look round and consider to what species of industry I should next devote myself.

I had always felt in myself some vocation towards the composition of a narrative of fictitious adventure; and among the things of obscure note which I have above referred to were two or three pieces of this nature. It is not therefore extraordinary that some project of the sort should have suggested itself on the present occasion.

But I stood now in a very different situation from that in which I had been placed at a former period. In past years, and even almost from boyhood, I was perpetually prone to exclaim with Cowley:

"What shall I do to be for ever known, And make the age to come my own?"

But I had endeavoured for ten years, and was as far from approaching my object as ever. Everything I wrote fell dead-born from the press. Very often I was disposed to quit the enterprise in despair. But still I felt ever and anon impelled to repeat my effort.

At length I conceived the plan of Political Justice. I was convinced that my object of building to myself a name would never be attained by merely repeating and refining a little upon what other men had said, even though I should imagine that I delivered things of this sort with a more than usual point and elegance. The world, I believed, would accept nothing from me with distinguishing favour that did not bear upon the face of it the undoubted stamp of originality. Having long ruminated upon the principles of Political Justice, I persuaded myself that I could offer to the public, in a treatise on this subject, things at once new, true, and important. In the progress of the work I became more sanguine and confident. I talked over my ideas with a few familiar friends during its progress, and they gave me every generous encouragement. It happened that the fame of my book, in some inconsiderable degree, got before its publication, and a certain number of persons were prepared to receive it with favour. It would be false modesty in me to say that its acceptance, when published, did not nearly come up to everything that could soberly have been expected by me. In consequence of this, the tone of my mind, both during the period in which I was engaged in the work and afterwards, acquired a certain elevation, and made me now unwilling to stoop to what was insignificant.

I formed a conception of a book of fictitious adventure that should in some way be distinguished by a very powerful interest. Pursuing this idea, I invented first the third volume of my tale, then the second, and last of all the first. I bent myself to the conception of a series of adventures of flight and pursuit; the fugitive in perpetual apprehension of being overwhelmed with the worst calamities, and the pursuer, by his ingenuity and resources, keeping his victim in a state of the most fearful alarm. This was the project of my third volume. I was next called upon to conceive a dramatic and impressive situation adequate to account for the impulse that the pursuer should feel, incessantly to alarm and harass his victim, with an inextinguishable resolution never to allow him the least interval of peace and security. This I apprehended could best be effected by a secret murder, to the investigation of which the innocent victim should be impelled by an unconquerable spirit of curiosity. The murderer would thus have a sufficient motive to persecute the unhappy discoverer, that he might deprive him of peace, character, and credit, and have him for ever in his power. This constituted the outline of my second volume.

The subject of the first volume was still to be invented. To account for the fearful events of the third, it was necessary that the pursuer should be invested with every advantage of fortune, with a resolution that nothing could defeat or baffle, and with extraordinary resources of intellect. Nor could my purpose of giving an overpowering interest to my tale be answered without his appearing to have been originally endowed with a mighty store of amiable dispositions and virtues, so that his being driven to the first act of murder should be judged worthy of the deepest regret, and should be seen in some measure to have arisen out of his virtues themselves. It was necessary to make him, so to speak, the tenant of an atmosphere of romance, so that every reader should feel prompted almost to worship him for his high qualities. Here were ample materials for a first volume.

I felt that I had a great advantage in thus carrying back my invention from the ultimate conclusion to the first commencement of the train of adventures upon which I purposed to employ my pen. An entire unity of plot would be the infallible result; and the unity of spirit and interest in a tale truly considered gives it a powerful hold on the reader, which can scarcely be generated with equal success in any other way.

I devoted about two or three weeks to the imagining and putting down hints for my story before I engaged seriously and methodically in its composition. In these hints I began with my third volume, then proceeded to my second, and last of all grappled with the first.