Whether anger is a sin?

❌ Objection 1 : It would seem that anger is not a sin. For we demerit by sinning. But "we do not demerit by the passions, even as neither do we incur blame thereby," as stated in Ethic. ii, 5. Consequently no passion is a sin. Now anger is a passion as stated above (FS, Question [46], Article [1]) in the treatise on the passions. Therefore anger is not a sin.

❌ Objection 2 : Further, in every sin there is conversion to some mutable good. But in anger there is conversion not to a mutable good, but to a person's evil. Therefore anger is not a sin.

❌ Objection 3 : Further, "No man sins in what he cannot avoid," as Augustine asserts [*De Lib. Arb. iii, 18]. But man cannot avoid anger, for a gloss on Ps. 4:5, "Be ye angry and sin not," says: "The movement of anger is not in our power." Again, the Philosopher asserts (Ethic. vii, 6) that "the angry man acts with displeasure." Now displeasure is contrary to the will. Therefore anger is not a sin.

❌ Objection 4 : Further, sin is contrary to nature, according to Damascene [*De Fide Orth. ii, 4,30]. But it is not contrary to man's nature to be angry, and it is the natural act of a power, namely the irascible; wherefore Jerome says in a letter [*Ep. xii ad Anton. Monach.] that "to be angry is the property of man." Therefore it is not a sin to be angry.