The fourth Chapter treats of truth evident and obvious to the senses, and consists only of six paragraphs, where he demonstrates what really is the divinity, and what are his attributes: he rejects the belief in a life to come, and the existence of spirits. The fifth Chapter treats "Of the Soul." It consists of seven paragraphs in which, after having exposed the vulgar opinions, he gives those of the Philosophers of antiquity, and concludes by showing the nature of the Soul according to his own system. In the sixth and last Chapter of seven paragraphs, he discourses on the Spirits called Demons, and shows the origin and falsity of the opinions as to their existence.--Such is the anatomy of this celebrated work. I might have given it in a manner more extended and more minute; but besides that this letter is already too long, I think that enough has been said to give insight into the nature of its contents. A thousand other reasons which you will well enough understand, have prevented me from entering upon it to so great a length as I could have done; "Est modus in rebus. [20]" Now although this book were ready to be printed with the preface in which I have given its history, and its discovery, with some conjectures as to its origin, and a few remarks which may be placed at its conclusion, yet I do not believe that it will live to see the day when men will be compelled all at once to quit their opinions and their imaginations, as they have quited their syllogisms, their canons, and their other antiquated modes. As for me I will not expose myself to the Theological stylus [21], which I fear as much as Fra-Poulo feared the Roman stylus, to afford to a few learned men the pleasure of reading this little treatise; but neither will I be so superstitious, on my death bed, as to make it be thrown into the flames, which we are informed was done by Salvius, the Swedish ambassador at the peace of Munster. Those who come after me may do what seems them good--they cannot disturb me in the tomb. Before I descend to that, I remain with much respect, your most obedient servant, J. L. R. L. Leyden, 1st January 1716. [This letter was written by M. Pierre Frederick Arpe, of Kiel in Holstein; the author of an apology for Vanini, printed in octavo at Rotterdam, 1712] COPY OF THE SECOND PART, VOL. I, ARTICLE IX. OF, "LITERARY MEMOIRS." PUBLISHED AT THE HAGUE BY HENRY DU SAUZET, 1716.