"I Remember Once" is a song by Gilbert O'Sullivan that reflects on various personal experiences and societal issues. The lyrics touch upon themes of family, relationships, education, and environmental awareness. In the first verse, the narrator reminisces about a childhood memory where his sister ate glass, indicating her peculiar taste preferences. Despite its strangeness, she enjoyed the experience. This could be interpreted as a metaphor for embracing the unconventional or finding joy in unexpected places. The second verse focuses on the narrator's own upbringing, specifically the doubts that their parents and society had about their relationship. O'Sullivan suggests that their parents' pessimism about the longevity of their union contrasts with the eventual outcome – the narrator's parents divorced while O'Sullivan's partner's parents are also going through separation. The line about parents "picking holes in us" could symbolize how constant criticism and negativity can contribute to the downfall of a relationship. Moving on, the third verse shifts to the narrator's experiences in school. They recall being called by their surname rather than their given name, emphasizing the lack of personal connection and respect from their teacher. O'Sullivan questions the effectiveness of education when those who are supposed to teach lack self-awareness. The fourth verse delves into a broader societal event – the first moon landing. O'Sullivan highlights the irony that such a monumental achievement seems to have lost its significance quickly over time. This perspective could suggest disillusionment with humanity's narrow focus or lack of progress after achieving great milestones. Lastly, the fifth verse addresses environmental concerns. O'Sullivan warns against taking the air we breathe for granted, as pollution poses a threat to our well-being. He notes that space, which appears vast and limitless, will ultimately be contaminated by our own waste if we continue on our current path. Through these interconnected experiences and observations, "I Remember Once" conveys a sense of disillusionment and encourages reflection on personal relationships, education, and the environment. O'Sullivan encourages listeners to question societal norms and strive for a more conscious and empathetic world.