When thinking becomes a sin, the difference is prohibited, and hearing and obedience is an inevitable obligation .. The presence in the heart of the Brotherhood is fraught with risks to those who refuse to hand over their minds to others, which is what happened with the lawyer Tharwat al -Kharbawi who left the group and defected from it in 2002 and narrates his story in this The book, "The Heart of the Brotherhood .." explaining - through a subjective experience - methods of thinking, dealing and judging matters within the group, leaving the reader the final judgment on the experience, perhaps he finds an explanation of what is happening now.