Catholic Treasury Network
Part IIa IIaePrudenceQuestion 54

Negligence

  1. Negligence is a lack of due care, a culpable absence ofsolicitude, in meeting or performing the practical duties oflife.

  2. Solicitude or proper carefulness is allied to prudence.Hence, a sin against solicitude is a sin against prudence.

  3. 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.

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Full Summa Text · II-II, Q. 54
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