Subject of numerous interpretations and studies, the vicissitudes of the famous Frankfurt Institute for Social Research nevertheless still reserve some little-known pages, such as the human and scientific relationship that bound philosopher Max Horkheimer and economist Friedrich Pollock for over fifty years. Based on texts and letters translated here into English for the first time as well as some previously unpublished documents, the book reconstructs the crucial moments in the friendship between the two scholars with a narrative style and philological accuracy. Nicola Emery accompanies us through the two friends and intellectuals’ nonconformism and search for an alternative life-form that led to the birth of the Frankfurt critical theory.