Part IIa IIaeCharityQuestion 41
Strife or Quarreling
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Strife or quarreling means fighting among individuals,even as war means fighting among peoples or nations. Strife comes from inordinate or perverse wills. It is therefore contrary to reason; it is a sin; it can be a mortal sin.
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Strife, as here understood, is not a mere affair of words as contention is; it includes deeds intended to hurt or harm another. Strife is rightly called “the daughter of anger.”
Full Summa Text · II-II, Q. 41
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