Ecclesiastes 7:9 in the World English Bible
Don’t be hasty in your spirit to be angry, for anger rests in the bosom of fools.
Context
8 Better is the end of a thing than the beginning thereof: and the patient in spirit is better than the proud in spirit.
9 Be not hasty in thy spirit to be angry: for anger resteth in the bosom of fools.
10 Say not thou, What is the cause that the former days were better than these? for thou dost not enquire wisely concerning this.