Arithmetic, Geometry, and the Mathematics, being taught in figures, admit no change in the system of teaching, or at least in the medium: the same might be said of Algebra, which has the simplicity of the alphabet for its medium for instruction and practice. This forms the only part of education that the priests have not corrupted, and the reason is because they could not; and these figures being above their reach to corrupt or destroy will prove their overthrow. The science of the Mathematics has given a fatal blow to Priestcraft, and this science, connected with Astronomy, was the first which, began to undermine the dogmas of all priests. The science of Chemistry has come to its aid, by proving that matter is indestructible and imperishable, and must have existed as it now is, to all eternity as to the past, and will exist as it now is, to all eternity as to the future. The sciences of Physiology and Zoology have convinced us that the organization of the animal called man, is not more wonderful than that of every other animal and vegetable, nor is he of more importance in the scale of Nature. All that can be said of him is, that he is superior in mental strength to any other animal, and his superiority over the lion, the tiger, or the elephant, is not more than the superiority of those animals over the lesser beasts of the forest. Man only possesses the highest degree in the rank of animals. It is high time to teach man what he really is in the scale of Nature, and no longer allow him to play such fantastic tricks as he does play, by pretending to be something beyond other animals, and to possess supernatural and immortal powers of existence. Man has nothing but the dogmas of superstition in support of his future sensible existence--these dogmas are false and wicked impostures. No appeal can be made to Nature in support of them. Man, as a part of a whole, or as an atom of matter, is immortal, but with whatever he might amalgamate after his frame has passed its dissolution, and has evaporated like a dunghill, or a bed of rotten vegetables, that atom can retain no sense of a former existence. The system of Pythagoras would have been strictly true and rational, if he or his disciples had not imagined a sense of former existence, or that an animal under one shape could retain a sense of his existence under a former shape, although the two might form two distinct animals of a different species. Pythagoras, and his followers, have erred only on this point. I would bring the whole race of mankind back to a conviction that they exist to no other purpose, and by no other cause than every other animal and vegetable. Let mankind be once sensible of this important fact, and they will cease to persecute, to harass, to rob, and to destroy each other. They would then make the best use of their time, and view their animal existence but as a moment in the space of eternity. They would sedulously