A quick-tempered person does foolish things, and the one who devises evil schemes is hated.
OJBHe that is quick-tempered dealeth folly, and an ish mezimot (a man of crafty schemes) is hated.
T4TThose who quickly become angry [IDM] do foolish things; people hate those who plan to do wicked things (OR, those who have good sense remain calm/patient).