I haven’t got the slightest idea how to change people, but still I keep a long list of prospective candidates just in case I should ever figure it out.

Sedaris’s line turns a familiar human impulse—wanting to “fix” other people—into a comic confession. The speaker admits powerlessness (“not the slightest idea how to change people”) while simultaneously revealing a persistent, almost bureaucratic readiness to do it anyway (“a long list of prospective candidates”). The humor comes from the mismatch between humility and control: even when we know change is largely self-directed, we keep mental dossiers of others’ flaws and imagine a future moment when we’ll finally have the authority, technique, or moral leverage to correct them. The quote gently satirizes judgment, self-righteousness, and the fantasy of reforming friends, family, or strangers.