It was in the decade of seventies that two units were assigned as comparative literature for B.A. students instead of M.A. and by the committee program of science organ in Arabic language and literature groups. In such condition, I composed entitled Al Adab Al Motagharen (Lessons on Theories and Comparative), to provide the students and colleagues and young teacher's needs, this book is the result of close study as extracting ten, authentic sources of comparative from beginning, in order to introduce this science as the scientific methodology, to consider the gradual formation of it in the historical bed, or the different approaches in the simple, fluent language for native students and young teachers in theoretical, comparative fields. After studying it in a term, they learn the necessary information, the new horizons, to consider future. This book has been composed by two respected teachers; Mahmud Heidari from Yasuj University and Farhad Rajabi from Gilan University, have been criticized. After studying the different criticism and greeting the critics either in positive and negative aspects, the authors have considered the goals of composing the book have rejected the contextual criticism devoid of formative aspects, and they have some approving on their rejection, and they criticized that the book hasn't logical coherence, struggle or culture, western culture, non-biased, scientific consideration, renunciation of titles of science organ, excess the theories in Islamic, comparative literature have answered some insults considering fair and the well method of debate, it invites the respectful critics to closely study the book in comparative literature considering all aspects.