Never go to bed mad. Stay up and fight. - Phyllis Diller
Speak when you are angry and you will make the best speech you will ever regret. - Ambrose Bierce
What it is
Anger is manifested in the individual who spurns love and opts instead for fury. It is also known as Wrath.
Why you do it
You're wired for it. Also, the people around you are pretty damn irritating.
Your punishment in Hell will be
You'll be dismembered alive.
Associated symbols & suchlike
Anger is linked with the bear and the color red.
In the Summa Theologiae, Medieval theologian Thomas Aquinas said Anger is "the name of a passion. A passion of the sensitive appetite is good in so far as it is regulated by reason, whereas it is evil if it set the order of reason aside." (2, 158, ad 2)
In The Canterbury Tales, Geoffrey Chaucer called Anger "the fervent blood of Man yquyked in his herte, thurgh which he wole harm to hym that he hateth./ For certes, the herte of man, by eschawfynge and moevynge of his blood, wexeth so trouble that he is out of alle juggement of resoun." (The Parson's Tale)