The book "The Spread of Universal Peace" was written by `Abdu'-Bahá, the second leader of the many-faceted Baha'i religion. In this edition, the author highlights the principles of love, understanding and harmony that are the basis of the Baha'i faith. This book guides the reader through the deep foundations of spiritual development, prompting reflection on the importance of world peace and spirituality in today's world. "Spreading Universal Peace" is an inspirational work that encourages a journey into the heart of the human soul and the search for inner harmony.