Argumentum Quotes

Those who are guilty of the argumentum ad ignorantiam profess belief in something because its opposite cannot be proved ... In the realm where "prejudice” is now most an issue, it normally takes a form like this: you cannot prove-by the method of statistics and quantitative measurement-that men are not equal. Therefore all men are equal. ... You cannot prove-again by the methods of science-that one culture is higher than another. Therefore the culture of the Digger Indians is just a good as that of Muncie, Indiana, or thirteenth-century France. (Richard Weaver)
The argumentum ad personam, is strongly disapproved of in the "academic community.” Respectable critique meets its opponent in its best form; critique honors itself when it overwhelms its rival in the full armor of its rationality. View quote
Peter Sloterdijk
You may discuss the question of legality on legal grounds, but not by an argumentum ad hominem. View quote
Sir John Bayley, 1st Baronet