If you haven’t got any charity in your heart, you have the worst kind of heart trouble.

The line plays on “heart trouble” as both a literal medical condition and a figurative diagnosis of character. Hope suggests that the absence of charity—generosity, compassion, and goodwill—is a deeper, more damaging ailment than physical disease, because it corrodes one’s relationships and moral life. By framing unkindness as a kind of pathology, the joke also implies that ethical failings are not merely private choices but conditions with social consequences. The humor softens the admonition, making the message memorable: a healthy life is measured not only by bodily well-being but by the capacity to care for others.