De ira…

Quote

“[Q]ualities which we ought to possess become better and more desirable the more extensive they are: if justice is a good thing, no one will say that it would be better if any part were subtracted from it; if bravery is a good thing, no one would wish it to be in any way curtailed: consequently the greater anger is, the better it is, for whoever objected to a good thing being increased? But it is not expedient that anger should be increased: therefore it is not expedient that it should exist at all, for that which grows bad by increase cannot be a good thing.”

— Seneca, On Anger.