This quote is saying that, like a romantic partner, a book can bring beauty and joy to your life. It can provide company, comfort, knowledge, and a sense of belonging. When you spend time with a book, you learn new ideas, perspectives, and information that can enrich your life. Reading a book can bring a sense of calm, admiration, or inspiration. This quote could be saying that books can truly be a wonderful companion, providing a source of nourishment for your mind, perspective, and emotions.