In "Devil's Cub" by Georgette Heyer, Lord Rupert is captivated by a powerful speech delivered by a young boy. He is so impressed that he expresses his admiration to Léonie, sharing his belief that such eloquence is unmatched. Lord Rupert seems to be enthralled by the boy's ability to communicate with such passion and flair, emphasizing how this is a trait the boy consistently exhibits.

Rupert's reaction highlights the boy's charm and persuasive skills, suggesting that he has a natural talent for oratory that leaves a lasting impression on his listeners. His admiration reflects not only his appreciation for the boy's words but also the impact such speech can have on those who witness it, showcasing a key theme in the story regarding young talent and charisma.