“When good people have a falling out, only one of them may be at fault at first; but if the strife continues long, usually both become guilty.”
“Myself when young did eagerly frequent doctor and saint, and heard great argument about it and about: but evermore came out by the same door as in I went.”
“It was completely fruitless to quarrel with the world, whereas the quarrel with oneself was occasionally fruitful and always, she had to admit, interesting.”
“Most of the arguments to which I am party fall somewhat short of being impressive, knowing to the fact that neither I nor my opponent knows what we are talking about”
“Concerning God, freewill and destiny: Of all that earth has been or yet may be, all that vain men imagine or believe, or hope can paint or suffering may achieve, we descanted.”
“An association of men who will not quarrel with one another is a thing which has never yet existed, from the greatest confederacy of nations down to a town meeting or a vestry.”
“Those disputing, contradicting, and confuting people are generally unfortunate in their affairs. They get victory, sometimes, but they never get good will, which would be of more use to them.”
“Heat and animosity, contest and conflict, may sharpen the wits, although they rarely do; they never strengthen the understanding, clear the perspicacity, guide the judgment, or improve the heart.”
“There are two things which cannot be attacked in front: ignorance and narrow-mindedness. They can only be shaken by the simple development of the contrary qualities. They will not bear discussion.”
“The most important thing in an argument, next to being right, is to leave an escape hatch for your opponent, so that he can gracefully swing over to your side without too much apparent loss of face.”
“When a thing is said to be not worth refuting you may be sure that either it is flagrantly stupid -- in which case all comment is superfluous -- or it is something formidable, the very crux of the problem.”
“Weak arguments are often thrust before my path; but although they are most insubstantial, it is not easy to destroy them. There is not a more difficult feat known than to cut through a cushion with a sword.”
“I will name you the degrees. The first, the Retort Courteous; the second, the Quip Modest; the third, the Reply Churlish; the fourth, the Reproof Valiant; the fifth, the Countercheck Quarrelsome; the sixth, the Lie with Circumstance; the seventh, the Lie Direct.”
“Argument is conclusive... but... it does not remove doubt, so that the mind may rest in the sure knowledge of the truth, unless it finds it by the method of experiment. For if any man who never saw fire proved by satisfactory arguments that fire burns. his hearer's mind would never be satisfied, nor would he avoid the fire until he put his hand in it that he might learn by experiment what argument taught.”