Ambrose of Milan, on Prov 26:4

“Answer not a fool according to his folly, lest thou be made like him.”

“Your flight is a good one if you do not answer the fool according to his folly. Your flight is good if you direct your footsteps away from the countenance of fools. Indeed, one swiftly goes astray with bad guides; but if you wish your flight to be a good one, remove your ways far from their words.”

Imported from an open dataset — not yet checked against the printed edition.