The quote from Nick Hornby's "High Fidelity," "What really matters is what you like, not what you are like," emphasizes the importance of individual taste and preferences over social identity. It suggests that personal interests, particularly in music and culture, define a person's character more significantly than their outward characteristics or lifestyle choices. This perspective encourages readers to focus on their passions and what brings them joy, rather than conforming to societal pressures or expectations.

This assertion resonates with the core themes of the book, which revolves around the protagonist's journey of self-discovery through his passion for music. As he navigates relationships and personal dilemmas, the idea that personal likes shape one's identity serves as a reminder that authentic connections and fulfillment stem from genuine interests. Ultimately, Hornby's message advocates for valuing personal taste as a means of understanding oneself and finding true happiness.