The book "Messages to the Bahá'í World: 1950–1957" by Shoghi Effendi is a collection of messages from the Head of the Bahá'í Religious Community covering the period from 1950 to 1957. This book contains letters that contain spiritual advice, words of encouragement and instructions for the development of the Bahá'í community and the promotion of the spiritual development of people. The author raises current issues, promotes peace and understanding between people of all cultures and religions. This book is a valuable resource for anyone seeking spiritual growth and understanding of the importance of harmony in the world.