But in considering this subject in the first instance, I was under the necessity of treating it as a matter of science, of philosophy; and in rectifying the aberrations of Religion, Theology, and Speculation, I was naturally obliged to use their expressions, and even to appear to speculate, or--which is the same thing--to turn theologian myself, while I nevertheless only analyse speculation, i.e., reduce theology to anthropology. My work, as I said before, contains, and applies in the concrete, the principle of a new philosophy suited--not to the schools, but--to man. Yes, it contains that principle, but only by evolving it out of the very core of religion; hence, be it said in passing, the new philosophy can no longer, like the old Catholic and modern Protestant scholasticism, fall into the temptation to prove its agreement with religion by its agreement with Christian dogmas; on the contrary, being evolved from the nature of religion, it has in itself the true essence of religion,--is, in its very quality as a philosophy, a religion also. But a work which considers ideas in their genesis and explains and demonstrates them in strict sequence, is, by the very form which this purpose imposes upon it, unsuited to popular reading. Lastly, as a supplement to this work with regard to many apparently unvindicated positions, I refer to my articles in the Deutsches Jahrbuch, January and February 1842, to my critiques and Charakteristiken des modernen After-christenthums, in previous numbers of the same periodical, and to my earlier works, especially the following:--P. Bayle. Ein Beitrag zur Geschichte der Philosophie und Menschheit, Ausbach, 1838, and Philosophie und Christenthum, Mannheim, 1839. In these works I have sketched, with a few sharp touches, the historical solution of Christianity, and have shown that Christianity has in fact long vanished, not only from the reason but from the life of mankind, that it is nothing more than a fixed idea, in flagrant contradiction with our fire and life assurance companies, our railroads and steam-carriages, our picture and sculpture galleries, our military and industrial schools, our theatres and scientific museums. LUDWIG FEUERBACH. Bruckberg, Feb. 14, 1843. CONTENTS. INTRODUCTION. CHAPTER PAGE I. § 1. The Essential Nature of Man 1 § 2. The Essence of Religion Considered Generally 12 Part I. THE TRUE OR ANTHROPOLOGICAL ESSENCE OF RELIGION.