VIII: contingency as withdrawal from the necessary; plurality, motion, disformity
VIII. So much concerning necessity: Contingency is a withdrawal from the necessary, by which things so are that they can be otherwise. The contingent is a certain withdrawal from the necessary; and the necessary consists in one, but the contingent in many, and it is spoken of in as many modes as the necessary.
Whence Cajetan (Summa I, question 13, article 13) says that the contingent has the character of plurality, motion, and disformity, because it can hold itself otherwise; but the necessary has the character of one and of the uniform, because it is impossible to hold itself otherwise. And the contingent proceeds from the necessary naturally, as plurality from unity, and not the reverse.
Latin
VIII. Haec de necessitate: CONTINGENTIA est recessus a necessario, quo res ita sunt ut aliter esse possint. Contingens est quidam a necessario recessus, et necessarium consistit in uno, contingens vero in pluribus, ac dicitur tot modis quot necessarium. Unde Caietanus 1.1. quaest. 13 artic. 13 ait, contingens habere rationem pluralitatis, motus ac disformitatis, quia potest aliter se habere: necessarium vero unius et uniformis, quia impossibile est aliter se habere. Contingens vero a necessario procedit naturaliter, ut pluralitas ab unitate, et non e converso.