Thomas Aquinas

“ And, according to the Platonists, the order of forms corresponds to the order of those separate substances; for example, that there is a single separate substance, which is horse and the cause of all horses, whilst above this is separate life, or "per se" life, as they term it, which is the cause of all life, and that above this again is that which they call being itself, which is the cause of all being. Avicenna, however, and certain others, have maintained that the forms of corporeal things do not subsist "per se" in matter, but in the intellect only. ”

“ Corporeal creatures according to their nature are good, though this good is not universal, but partial and limited, the consequence of which is a certain opposition of contrary qualities, though each quality is good in itself. To those, however, who estimate things, not by the nature thereof, but by the good they themselves can derive therefrom, everything which is harmful to themselves seems simply evil. ”

“ The amount of the power of an agent is measured not only by the thing made, but also by the manner of making it; for one and the same thing is made in one way by a higher power, in another by a lower. ”

“ Further, justice does not give unequal things except to the unequal. Now God is just: therefore inequality not created by God must precede all inequality created by Him. But an inequality not created by God can only arise from free-will, and consequently all inequality results from the different movements of free-will. Now, corporeal creatures are unequal to spiritual creatures. Therefore the former were made on account of movements of free-will, and not on account of God's goodness. ”

“ Now, such are the forms of corruptible things that at one time they exist and at another exist not, without being themselves generated or corrupted, but by reason of the generation or corruption of the "composite"; since even forms have not being, but composites have being through forms: for, according to a thing's mode of being, is the mode in which it is brought into being. Since, then, like is produced from like, we must not look for the cause of corporeal forms in any immaterial form, but in something that is composite, as this fire is generated by that fire. ”

“ But this does not apply to things as at first instituted. For just as an architect, without injustice, places stones of the same kind in different parts of a building, not on account of any antecedent difference in the stones, but with a view to securing that perfection of the entire building, which could not be obtained except by the different positions of the stones; even so, God from the beginning, to secure perfection in the universe, has set therein creatures of various and unequal natures, according to His wisdom, and without injustice, since no diversity of merit is presupposed. ”

“ Forms received into matter are to be referred, not to self-subsisting forms of the same type, as the Platonists held, but either to intelligible forms of the angelic intellect, from which they proceed by movement, or, still higher, to the types in the Divine intellect, by which the seeds of forms are implanted in created things, that they may be able to be brought by movement into act. ”

“ But the production of finite things, where nothing is presupposed as existing, is the work of infinite power, and, as such, can belong to no creature.
Art. 4 - Whether the forms of bodies are from the angels? Objection 1: It would seem that the forms of bodies come from the angels. For Boethius says (De Trin. i) : "From forms that are without matter come the forms that are in matter." But forms that are without matter are spiritual substances, and forms that are in matter are the forms of bodies. Therefore, the forms of bodies are from spiritual substances. ”

“ From the consideration of spiritual creatures we proceed to that of corporeal creatures, in the production of which, as Holy Scripture makes mention, three works are found, namely, the work of creation, as given in the words, "In the beginning God created heaven and earth" ”

“ But the Apostle's words, "The things which are seen are temporal," though true even as regards such things considered in themselves (in so far as every visible creature is subject to time, either as to being or as to movement) , are intended to apply to visible things in so far as they are offered to man as rewards. For such rewards, as consist in these visible things, are temporal; while those that are invisible endure for ever. ”

“ But this position is untenable, since the first production of corporeal creatures is by creation, by which matter itself is produced: for in the act of coming into being the imperfect must be made before the perfect: and it is impossible that anything should be created, save by God alone.
In proof whereof it must be borne in mind that the higher the cause, the more numerous the objects to which its causation extends. Now the underlying principle in things is always more universal than that which informs and restricts it ”

“ For corruptible creatures endure for ever as regards their matter, though they change as regards their substantial form. But incorruptible creatures endure with respect to their substance, though they are mutable in other respects, such as place, for instance, the heavenly bodies ”

“ I answer that, Some have maintained that creatures proceeded from God by degrees, in such a way that the first creature proceeded from Him immediately, and in its turn produced another, and so on until the production of corporeal creatures. ”

“ For they do not reflect that what is in some way injurious to one person, to another is beneficial, and that even to themselves the same thing may be evil in some respects, but good in others. And this could not be, if bodies were essentially evil and harmful. ”