Chapter 4 extends the argument on the ‘duplex’ form of revolutionary personhood by exploring the shapes it takes in people’s relationship with Marxist-Leninist ideology. The analysis draws its material from heated public debates that raged in the Cuban public sphere throughout the 1960s, regarding the merits and demerits of using Soviet and other textbooks (‘manuales’) as the prime tool for bringing the rudiments of communist ideology to the masses. Comparing this with classic anthropological accounts of the power of ritual in bringing transcendent orders to life, the chapter develops an alternative to meaning-based theories of ideology, which focus on questions of its truth-value and legitimating powers, by focusing instead on ideology as a relational form, configuring people in relation to ideological texts and the ideas that they contain. The contrasting positions taken in the controversies over textbooks in Cuba, then, are shown as different ways of configuring the relationship between people and ideas. Duality and how best to negotiate the ruptures it creates, including temporal rifts between the past and the present, will once again be a central theme of this morphological discussion.