We have given, in the preceding portion of this chapter, extracts from eminent authors showing that brutes reason, that they exercise, to a degree, all the powers of the human mind, that they have a sense, to some extent, of right and wrong, and give evidence, of the same nature as man is able to give in reference to himself, that they possess just as immaterial a soul as he. And have we not all seen horses and dogs that gave evidence of possessing more good sense than some men? And in this graduated scale of animated existence, where is the dividing line between the mortal and the immortal? Will some one locate it? What degree of mental capacity is necessary to constitute an evidence of immortality? And here we leave this argument. It demands no further notice till its friends who base immortality on mental capacity will determine which class of their less fortunate brothers is so low as to be beyond its reach. _Universal belief and inborn desire._ Men have universally believed in the immortality of the soul, it is claimed, and all men desire it; therefore, all men have it. Strange conclusion from strange premises. As to the first part of this argument, the universal belief, that appears not to be true, in fact. On this, a glance at a quotation or two must suffice. Whately (Essay 1 on a Future State) says:-- “We find Socrates and his disciples, represented by Plato, as fully admitting in their discussions of the subject, that ‘men in general were highly incredulous as to the soul’s future existence.’ The Epicurean school openly contended against it. Aristotle passes it by as not worth considering, and takes for granted the contrary supposition, as not needing proof.” Leland, on the Advantages of Revelation, says:-- When Cicero “sets himself to prove the immortality of the soul, he represents the contrary as the prevailing opinion,” there being “crowds of opponents, not the Epicureans only; but, which he could not account for, those that were the most learned persons, had that doctrine in contempt.”