Extremism: A Philosophical Analysis: by Quassim Cassam, London, Routledge, 2021, 254 pp., $142.36 (cloth); $24.95 (paper); $18.99 (Kindle).

Cassam stresses the need for a detailed intellectual and emotional engagement with the ideology and narratives of extremists by giving them reasons, relative to their own extremist ideologies, to change their views (202). As Cassam notes (29), questions such as what extremism is, what is an extremist mindset, or what defines a common extremist style cannot be answered solely by armchair reflection. Extremism has been a constant presence and threat to the stability of the world in the last few decades. [Extracted from the article]