Part IIa IIaePrudenceQuestion 54
Negligence
-
Negligence is a lack of due care, a culpable absence ofsolicitude, in meeting or performing the practical duties oflife.
-
Solicitude or proper carefulness is allied to prudence.Hence, a sin against solicitude is a sin against prudence.
-
Although negligence is often a venial sin, it ispossible that it may be a mortal sin; this is the case on twooccasions: (a) when negligence is concerned with somethingnecessary to salvation, and (b) when negligence is a completeremissness about the things of God.
Full Summa Text · II-II, Q. 54
Read the complete question at New Advent →