There are seven capital or deadly sins, so called because they are as it were the sources of origin of all other vices and sins. They are pride, avarice, impurity or lust, anger, gluttony, envy and sloth.
Anger is wrong if it is allowed to control the mind and overrule the power of judgment, or if it leads a person to seek revenge beyond the just requirement of reason, by, for example, inflicting punishment for its own sake and not simply to correct the wrong done and restore the balance of justice.
“Let every man be swift to hear, but also to speak and slow to anger,” says St. James. To give way to anger is a sign of weakness, not strength.
Dorothy Lucas
Harrison