On the Soul (Anima)
3 But perhaps this question is asked, If it be the understanding which prays and sings with the spirit, and if it be the same which receives both perfection and salvation, how is it that Peter says, “Receiving the end of your faith, even the salvation of your souls?” If the soul neither prays nor sings with the spirit, how shall it hope for salvation? Or when it attains to blessedness, shall it be no longer called a soul? Let us see if perhaps an answer may be given in this way, that as the Saviour came to save what was lost, that which formerly was said to be lost is not lost when it is saved; so also, perhaps, this which is saved is called a soul, and when it has been placed in a state of salvation will receive a name from the Word that denotes its more perfect condition. But it appears to some that this also may be added, that as the thing which was lost undoubtedly existed before it was lost, at which time it was something else than destroyed, so also will be the case when it is no longer in a ruined condition. In like manner also, the soul which is said to have perished will appear to have been something at one time, when as yet it had not perished, and on that account would be termed soul, and being again freed from destruction, it may become a second time what it was before it perished, and be called a soul. But from the very signification of the name soul which the Greek word conveys, it has appeared to a few curious inquirers that a meaning of no small importance may be suggested. For in sacred language God is called a fire, as when Scripture says, Our God is a consuming fire. Respecting the substance of the angels also it speaks as follows: “Who makes His angels spirits, and His ministers a burning fire;” and in another place, “The angel of the Lord appeared in a flame of fire in the bush.” We have, moreover, received a commandment to be “fervent in spirit;” by which expression undoubtedly the Word of God is shown to be hot and fiery. The prophet Jeremiah also hears from Him, who gave him his answers, “Behold, I have given My words into your mouth a fire.” As God, then, is a fire, and the angels a flame of fire, and all the saints are fervent in spirit, so, on the contrary, those who have fallen away from the love of God are undoubtedly said to have cooled in their affection for Him, and to have become cold. For the Lord also says, that, “because iniquity has abounded, the love of many will grow cold.” Nay, all things, whatever they are, which in holy Scripture are compared with the hostile power, the devil is said to be perpetually finding cold; and what is found to be colder than he? In the sea also the dragon is said to reign. For the prophet intimates that the serpent and dragon, which certainly is referred to one of the wicked spirits, is also in the sea. And elsewhere the prophet says, “I will draw out my holy sword upon the dragon the flying serpent, upon the dragon the crooked serpent, and will slay him.” And again he says: “Even though they hide from my eyes, and descend into the depths of the sea, there will I command the serpent, and it shall bite them.” In the book of Job also, he is said to be the king of all things in the waters. The prophet threatens that evils will be kindled by the north wind upon all who inhabit the earth. Now the north wind is described in holy Scripture as cold, according to the statement in the book of Wisdom, “That cold north wind;” which same thing also must undoubtedly be understood of the devil. If, then, those things which are holy are named fire, and light, and fervent, while those which are of an opposite nature are said to be cold; and if the love of many is said to wax cold; we have to inquire whether perhaps the name soul, which in Greek is termed ψυχή, be so termed from growing cold out of a better and more divine condition, and be thence derived, because it seems to have cooled from that natural and divine warmth, and therefore has been placed in its present position, and called by its present name. Finally, see if you can easily find a place in holy Scripture where the soul is properly mentioned in terms of praise: it frequently occurs, on the contrary, accompanied with expressions of censure, as in the passage, “An evil soul ruins him who possesses it;” and, “The soul which sins, it shall die.” For after it has been said, “All souls are Mine; as the soul of the father, so also the soul of the son is Mine,” it seemed to follow that He would say, “The soul that does righteousness, it shall be saved,” and “The soul which sins, it shall die.” But now we see that He has associated with the soul what is censurable, and has been silent as to that which was deserving of praise. We have therefore to see if, perchance, as we have said is declared by the name itself, it was called ψυχή, i.e., anima, because it has grown cold from the fervour of just things, and from participation in the divine fire, and yet has not lost the power of restoring itself to that condition of fervour in which it was at the beginning. Whence the prophet also appears to point out some such state of things by the words, “Return, O my soul, unto your rest.” From all which this appears to be made out, that the understanding, falling away from its status and dignity, was made or named soul; and that, if repaired and corrected, it returns to the condition of the understanding.
4. Now, if this be the case, it seems to me that this very decay and falling away of the understanding is not the same in all, but that this conversion into a soul is carried to a greater or less degree in different instances, and that certain understandings retain something even of their former vigour, and others again either nothing or a very small amount. Whence some are found from the very commencement of their lives to be of more active intellect, others again of a slower habit of mind, and some are born wholly obtuse, and altogether incapable of instruction. Our statement, however, that the understanding is converted into a soul, or whatever else seems to have such a meaning, the reader must carefully consider and settle for himself, as these views are not be regarded as advanced by us in a dogmatic manner, but simply as opinions, treated in the style of investigation and discussion. Let the reader take this also into consideration, that it is observed with regard to the soul of the Saviour, that of those things which are written in the Gospel, some are ascribed to it under the name of soul, and others under that of spirit. For when it wishes to indicate any suffering or perturbation affecting Him, it indicates it under the name of soul; as when it says, “Now is My soul troubled;” and, “My soul is sorrowful, even unto death;” and, “No man takes My soul from Me, but I lay it down of Myself.” Into the hands of His Father He commends not His soul, but His spirit; and when He says that the flesh is weak, He does not say that the soul is willing, but the spirit: whence it appears that the soul is something intermediate between the weak flesh and the willing spirit.
Source: De Principiis (New Advent)