Part 6267

s could have been previously corrupted in two ways: in one way, of themselves; in another way, accidentally. They could be corrupted of themselves, as by alteration of the qualities, and increase or decrease of the quantity, not in the way in which increase or decrease is found only in animated bodies, such as the substances of the bread and wine are not, but by addition or division; for, as is said in Metaph. iii, one dimension is dissolved by division, and two dimensions result; while on the contrary, by addition, two dimensions become one. And in this way such accidents can be corrupted manifestly after consecration, because the dimensive quantity which remains can receive division and addition; and since it is the subject of sensible qualities, as stated above (A[1]), it can likewise be the subject of their alteration, for instance, if the color or the savor of the bread or wine be altered.

An accident can be corrupted in another way, through the corruption of its subject, and in this way also they can be corrupted after consecration; for although the subject does not remain, still the being which they had in the subject does remain, which being is proper, and suited to the subject. And therefore such being can be corrupted by a contrary agent, as the substance of the bread or wine was subject to corruption, and, moreover, was not corrupted except by a preceding alteration regarding the accidents.

Nevertheless, a distinction must be made between each of the aforesaid corruptions; because, when the body and the blood of Christ succeed in this sacrament to the substance of the bread and wine, if there be such change on the part of the accidents as would not have sufficed for the corruption of the bread and wine, then the body and blood of Christ do not cease to be under this sacrament on account of such change, whether the change be on the part of the quality, as for instance, when the color or the savor of the bread or wine is slightly modified; or on th