Metaphor "both spark and flint," The spark and flint imagery evokes the idea of ignition or the starting of a fire, hinting at the character's inner passion or strength. juxtaposition of "colourless rock" and eyes as "both spark and flint" . The "colourless rock" implies a lack of emotion or expression , suggesting a stoic or unyielding demeanor. Meanwhile, the "spark and flint" imagery symbolizes the character's hidden fire or resilience, hinting an underlying strength or determination