The sentence that suggests that Don Quixote is a parody of the Knight archetype is:
“O Princess Dulcinea, lady of this captive heart, a grievous wrong hast thou done me to drive me forth with scorn….”
This line exemplifies the exaggerated romanticism and melodrama often associated with the knightly love tradition, indicating that Don Quixote's expressions are overly dramatic and perhaps mock the traditional knightly ideals.