Every reader finds himself. The writer's work is merely a kind of optical instrument that makes it possible for the reader to discern what, without this book, he would perhaps never have seen in himself.

Summary

This quote suggests that when readers engage with a writer's work, they have the opportunity to discover aspects of themselves that may have otherwise remained hidden. The writer's work serves as a tool or lens that allows readers to perceive something about themselves that they may not have recognized before. It implies that books have the power to enlighten and bring about self-discovery, providing readers with valuable insights into their own lives and perspectives.

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