You taught me to be nice, so nice that now I am so full of niceness, I have no sense of right and wrong, no outrage, no passion.

Keillor’s line satirizes “niceness” as a social virtue that can become morally anesthetizing. The speaker suggests that being trained to be agreeable and nonconfrontational has crowded out sharper ethical faculties: the ability to judge, to feel righteous anger, and to act with conviction. “No outrage, no passion” implies not serenity but a loss of moral energy—an incapacity to respond proportionately to injustice or wrongdoing. The quote thus critiques a culture (or upbringing) that prizes politeness over integrity, implying that genuine goodness sometimes requires conflict, strong feeling, and the willingness to say “this is wrong.”