Never argue with a fool, onlookers may not be able to tell the difference. – Author unknown, attributed to Mark Twain

A dialogue is not made up of two monologues. – Howard E. Short, quoted in United Church Herald, Vol.10, 1967 [See also above qu

And there is monologue disguised as dialogue, in which two or more men, meeting in space, speak each with himself in strangely tortuous and circuitous ways and yet imagine they have escaped the torment of being thrown back on their own resources. – Martin Buber (1878—1965), translated from German

The difference between a smart man and a wise man is that a smart man knows what to say, a wise man knows whether or not to say it. – Frank M. Garafola