I make it a point never to argue with people for whose opinion I have no respect. Edward Gibbon
Give me the liberty to know, to utter, and to argue freely according to conscience, above all liberties. John Milton
To argue with a man who has renounced the use and authority of reason, and whose philosophy consists in holding humanity in contempt, is like administering medicine to the dead, or endeavoring to convert an atheist by scripture. Thomas Paine
God grant me to argue with those who understand me. Spanish Proverb
A marketplace is not the pace for a husband and wife to argue. African Proverb
The man who loves to argue is left without friends. American Proverb