Final answer:
Without context about Mr. Derby and the specific story, it is impossible to accurately determine which quote was spoken by him.
Step-by-step explanation:
The provided information does not correspond to a character named Mr. Derby, and the quotes given are not directly linked to specific characters from specific texts in the excerpts provided. Therefore, without the context of which specific story or book these quotes are drawn from, it is impossible to accurately determine which quote was spoken by Mr. Derby. For an effective answer, it would be necessary to know the story or novel in question and have familiarity with the character of Mr. Derby within that specific context.