At its core, the novel delves into the idea of ​​fate versus free will, as the protagonist, Mary Porter-Malcolm, navigates her journey of self-discovery while adhering strictly to the advice of her favorite literary classics. Mary’s belief in the power of literature to guide her decisions leads her to create a set of rules based on famous literary works, which she follows religiously in her quest for the perfect life.

As Mary’s carefully constructed plans unravel and she faces unexpected challenges and opportunities, the novel examines the complexities of love, friendship, and personal fulfillment. Through Mary’s interactions with her friends, family, and romantic interests, readers are invited to reflect on the importance of authenticity, spontaneity, and embracing the unexpected twists and turns of life’s journey.

“By the Book” also explores the transformative nature of literature and its ability to provide solace, inspiration, and guidance during times of uncertainty. Mary’s deep connection to books serves as a source of comfort and strength, reminding readers of the profound impact that stories can have on shaping our understanding of ourselves and the world around us.

Overall, “By the Book” is a delightful and thought-provoking novel that celebrates the joys of literature, friendship, and finding one’s own path in life. With its engaging storyline, relatable characters, and poignant themes, the book offers a compelling reminder to readers that sometimes the most meaningful chapters of our lives are the ones we least expect.