The Treatises of Cyprian: Three Books of Testimonies Against the Jews. 151That not everything is to be done which is lawful.

Cyprian · The Ante-Nicene Fathers Volume V: The Fathers of the Third Century by Philip Schaff

92. That not everything is to be done which is lawful.

Paul, in the first Epistle to the Corinthians: "All things are lawful, but all things are not expedient: all things are lawful, but all things edify not."