CAUSE OF GOD AND TRUTH.
Chapter 5—Of Perseverance
Section 10—Lactantius. A.D. 320.
Lactantius clearly asserts the perpetuity of virtue or grace, when he affirms, that where it once is, it can never remove; his words are these, “virtue is perpetual, without any intermission; nec discedere ab eo potest, qui enim semel cepit, ‘nor can it depart from him who has once received it;' for if it has any interval, if we can at any time be without it, vices immediately return, which always oppose virtue; nor is it therefore laid hold on, if it leaves, if it at any time departs; but seeing it has placed for itself a stable habitation, it must needs be conversant in every act; nor can it truly repel vices, and cause them to flee away, unless it fortifies the breast where it has its seat, perpetua statione, ‘with a perpetual station; wherefore the perpetuity of virtue shows, that the human mind, if it has received virtue, continues, because virtue is perpetual, and the human mind only is capable of it.”
 Lactant. Institut. Divin. 1. 7. c. 10, p. 562.