The appeal to Allah generally takes two forms: the appeal through the calming of hearts, which has a deeper impact, and the appeal through the writing of books, which has a more lasting impact. The teacher, Dr. Mohammad Rateb Al-Nabulsi, known for his appeal, presented deep and coherent content, with a fluid and captivating style. His book "Regards on Islam" starts from the bases taken from the Koran and the Sunnah, highlighting the importance of knowledge before action, of principles before details, of encouragement before threat, of facilitation rather than complication, progress rather than leaps, ideas rather than titles, consensual subjects rather than controversial ones, principles rather than people. It aims to address the heart and mind simultaneously, to emphasize the cognitive, behavioral and aesthetic wholeness of religion, while categorizing the book according to its themes: beliefs, rituals, transactions, noble moral values, psychological education, biography, topics related to the call, scientific topics, prayers and invocations.