A kiss is a lovely trick designed by nature to stop speech when words become superfluous.

The line treats the kiss as a kind of natural punctuation: an instinctive gesture that replaces language at the moment language can no longer add anything essential. It suggests that intimacy sometimes communicates more directly than speech, and that lovers may reach a point where explanation, persuasion, or even confession becomes unnecessary. The phrasing also carries a playful irony—calling it a “trick”—as if nature has cleverly equipped humans with a socially acceptable way to end talking and begin feeling. In quotation culture, it often functions as a romantic defense of nonverbal communication and the limits of words.