For example, comparing the original 1957 edition to the 1987 edition, among the numerous alterations, is the replacement of his dedication of the book to "The First Guardian of the Baháʼí Faith" to simply "The Guardian."
As an illustration, when contrasting the original 1957 edition with the 1987 edition, one observes changes such as altering the dedication from "To the First Guardian of the Baháʼí Faith" to merely "The Guardian."