Too much truth is uncouth.

Adams’s epigram turns on the social cost of blunt candor. “Truth” here is not denied; rather, an excess of it—too direct, too detailed, too unfiltered—can violate norms of tact and proportion, becoming “uncouth” (ill-mannered, crude). The line captures a recurring theme in Adams’s light verse and newspaper wit: the gap between what is accurate and what is socially workable. It suggests that truth needs shaping—through discretion, timing, or humor—to be heard without needlessly wounding others or disrupting communal harmony. The sting of the aphorism is that honesty, when untempered by civility, can resemble rudeness even when it is correct.