For Theory is an invitation to review the impact of neoliberalization on critical thinking and a call to recover the momentum of theoretical production capable of sustaining better analyses of the conjuncture for an emancipatory strategy. Relying on the tradition of Althusserian studies, the book discusses the political, technocratic, neo-anarchist and reformist drifts of Latin American leftist thought and thus raises the need to advance in a materialistic and pluralistic conceptualization of historical time and to develop the category of overdetermination. It does so by focusing on the theory of reproduction and in a complex consideration of the concept of class struggle, in order to dispute the future with the dominant ideology that imposes a regime of presentist temporality, discouraging any emancipatory imagination of the future.