There is a boy in my gym class (I’ll call him Bill) who has unbearably yellow teeth that almost make everyone feel unpleasant. Recently another boy told Bill that he should “go Ajax” his teeth. Bill was crushed. Had the other boy been thinking, he would have realized that there is a better way to handle such a situation. He could have dealt with it with tact. He could have showed this hurtful truth in a more careful, sensitive way—that’s “tact”.