The continuity of any movement is assured by enduring commitment to the movement's ideology and principles, but as the recruitment process moves on, newcomers may share different inspirations and perceptions of social reality, which result in that movement’s change, renewal or decay and dissolution. The same is applied to the impact of emerging generational waves and schools of thought on the movement’s course and trajectory. This book tackles this phenomenon of movements’ change, from a generational perspective based on the Egyptian Muslim Brotherhood’s experience. January 25 Revolution, and prior debates and exchange of ideas via media and newspapers for the last decade, throughout a liberal façade assured by Mubarak’s regime, put many problematic issues, including Shari’a application, democracy, Copts and women’s rights in front of the movement. These heated issues, in addition to other internal dynamics, brought Muslim Brotherhood’s generational gaps to the surface pushing for an academic interest to analyze the phenomenon's roots, reasons, patterns, and influences. The book is an attempt to address the politics of generational gaps within the movement from 1970s till 2011.