In Jonathan Safran Foer's novel "Everything Is Illuminated," the quote "To feel alone is to be alone" encapsulates the profound sense of isolation that can impact one’s perception of reality. This sentiment reflects how emotional loneliness can be as tangible as physical solitude. When someone experiences feelings of loneliness, it often amplifies their disconnect from the world around them, making them feel singularly isolated even in the presence of others.

The quote suggests that the experience of solitude is deeply subjective, highlighting the importance of connection and understanding in human relationships. It conveys that feeling alone is not merely a state of being but an emotional experience that can affect one's well-being. Through Foer's narrative, readers are invited to explore the complexities of human emotions and the significance of finding companionship amid loneliness.