Bernard Gert (1934-2011) 1It is amazing how poorly people argue, how little they pay serious attention to whether or not they hold inconsistent views.

(Bernard Gert, "Morality Versus Slogans," Center for the Study of Ethics in Society 3 [December 1989]: 3-32, at 15)

Note from KBJ: I think Gert means "reason," not "argue." Reasoning is intrapersonal; arguing is interpersonal.