Author: Sheikh Muhammad Rida Al-Muzaffar was a well-known figure in Najaf Seminary. He was a Shia Marja', philosopher, and jurist. He started his education in Najaf. After learning to read and write, he began studying in the Islamic Seminary at the age of 13. He studied the principles of Arabic literature and grammar with Shaykh Muhammad Taha al-Huwayzi. He then studied fiqh (jurisprudence) and usul al-fiqh (principles of jurisprudence) with prominent scholars in these fields. Al-Muzaffar tried to provide textbooks of Islamic disciplines in an up-to-date and simple style. His written works are free of complexities usually observed in older works of fiqh and usul al-fiqh. They are easy to comprehend. His style of writing is said to be affected by his familiarity with literature and modern teaching. The books, al-Mantiq (logic), usul al-fiqh, and 'Aqa'id al-Imamiyya (Imamiyya beliefs), upgraded the way textbooks of Islamic seminaries were written. They are textbooks of Islamic seminaries today. The Book: " ""Al-Mantiq"" by Sheikh Muzaffar stands out for its eloquent yet accessible text, making it easier to understand compared to other books in the field. Written with an educational purpose in mind, it is contemporary and features relevant examples that aid comprehension. One of its key strengths is the deliberate omission of most unuseful logical discussions, ensuring that the content remains focused and practical for learners. These attributes make ""Al-Mantiq"" a valuable resource for students and scholars seeking a clear and effective introduction to logical principles. The book consists of Sheikh Muzaffar's lectures regarding logic since 1357/1938-9 in al-Muntada al-Nashr College. The book is taught as a textbook in both the Islamic Seminaries and Universities. It was taught first in the Najaf Seminary and then in Iran too. Topics: Types of Knowledge, The Conception and Assent, The Semiotics, Signification, The divisions of words, The Concept and the Instance, The Primary Predication and the Common Secondary Predication, The Four Relations, Rules of Division, Definition