'Heart of the Night' (Qalb al-Layl) is a profound philosophical novel by the Nobel laureate Naguib Mahfouz. It delves into the introspective journey of Jaafar al-Rawi, an elderly philosopher reflecting on his life's pursuit of truth, his disillusionment with societal norms, and the complexities of human existence. Through his reflective monologues, the novel explores themes of fate, free will, morality, and the relentless search for meaning in a seemingly indifferent world. Mahfouz crafts a compelling narrative that challenges readers to ponder the fundamental questions of life and purpose, offering deep insights into the human condition.