The quote reflects on the emotional highs and lows experienced by individuals who are deeply affected by their surroundings. The author suggests that living life at an intense emotional level may prevent people from experiencing a sense of contentment. Instead, they oscillate between unhappiness and overwhelming joy, which complicates the quest for stability in relationships.
Hornby implies that this intense emotional state may be influenced by cultural elements, such as music, with Al Green serving as a notable example. The connection between emotional experiences and the desire for meaningful relationships suggests that true contentment may require balance and moderation in how we engage with our feelings.