Suffer fools gladly is a well-known phrase in contemporary use, first coined by Saint Paul in his second letter to the Church at Corinth (chapter 11). The full verse of the original source of the idiom, 2 Corinthians 11:19 (KJV), reads "For ye suffer fools gladly, seeing ye yourselves are wise."[1][2] The New International Version states "You gladly put up with fools since you are so wise!"[3]

In its current usage, the meaning of the negative, not to suffer fools gladly, has been stated by the Cambridge Idiom Dictionary, 2nd Ed. (2006), as "to become angry with people you think are stupid".[4]