Seneca, De Ira 8. 4-6
“There are many people who will do the same for different reasons. An arrogant man offends you with his scorn, a bitter man uses an insult, the petulant causes an injury; a spiteful man is malicious while a pugnacious man is contentious and the windbag liar is vain. You will not tolerate being feared by a suspicious man, beaten by a stubborn one, or looked own upon by a delicate man.
Choose honest, easy-going, even-tempered people who do not inspire rage and yet endure it if it comes. More advantageous than these are those who are submissive, kind, and even sweet-tempered—but not so bad that they fawn on you since too much toadying upsets temperamental men. There was a friend of mine, who was a good man, but easy to anger, whom it was no safer to praise than to mock”
Multi ex variis causis idem facturi: offendet te superbus contemptu, dicax contumelia, petulans iniuria. lividus malignitate, pugnax contentione, ventosus et mendax vanitate; non feres a suspicioso timeri, a pertinace vinci, a delicato fastidiri. Elige simplices, faciles, moderatos, qui iram tuam nec evocent et ferant. Magis adhuc proderunt summissi et humani et dulces, non tamen usque in adulationem, nam iracundos nimia assentatio offendit. Erat certe amicus noster vir bonus, sed irae paratioris, cui non magis tutum erat blandiri quam male dicere.