little views, from amongst which it was necessary to select some few that were good and useful, and sufficiently encouraging to enable me to support the painful labor. I frequently wished to have given it up, and should have done so, could I have got it off my hands with a great grace; but when I received the manuscripts of the abbe, which were given to me by his nephew, the Comte de Saint Pierre, I had, by the solicitation of St. Lambert, in some measure engaged to make use of them, which I must either have done, or have given them back. It was with the former intention I had taken the manuscripts to the Hermitage, and this was the first work to which I proposed to dedicate my leisure hours.
I had likewise in my own mind projected a third, the idea of which I owed to the observations I had made upon myself and I felt the more disposed to undertake this work, as I had reason to hope I could make it a truly useful one, and perhaps, the most so of any that could be offered to the world, were the execution equal to the plan I had laid down. It has been remarked that most men are in the course of their lives frequently unlike themselves, and seem to be transformed into others very different from what they were. It was not to establish a thing so generally known that I wished to write a book; I had a newer and more important object. This was to search for the causes of these variations, and, by confining my observations to those which depend on ourselves, to demonstrate in what manner it might be possible to direct them, in order to render us better and more certain of our dispositions. For it is undoubtedly more painful to an honest man to resist desires already formed, and which it is his duty to subdue, than to prevent, change, or modify the same desires in their source, were he capable of tracing them to it. A man under temptation resists once because he has strength of mind, he yields another time because this is overcome; had it been the same as before he would again have triumphed.
By examining within myself, and searching in others what could be the cause of these different manners of being, I discovered that, in a great measure they depended on the anterior impressions of external objects; and that, continually modified by our senses and organs, we, without knowing it, bore in our ideas, sentiments, and even actions, the effect of these modifications. The striking and numerous observations I had
