“Keck’s book is a breath of fresh air. He is willing to explore the depth of the issues raised by Lévy-Bruhl in the rise of sociology and anthropology after the Dreyfus Affair and the struggle against French anti-Semitism, and to go beyond terminological allergy towards the concepts of “primitive” and “mentality.” The argument that French social scientists have tried to understand catastrophic and “unpredictable” events highlights the insufficiency of a social scientific thought that restricted itself to modern conceptions of rationality and logic, and is increasingly important in today’s era of pandemics and global warming.”

- Ghassan Hage, author of "Alter-Politics: Critical Anthropology and the Radical Imagination",

“With a dizzying abundance of references, Keck demonstrates the breadth and versatility of Lévy-Bruhl’s interests. These placed him at the intersection of different fields of investigation, reflection and action, not only as a central intercessor at the crossroads of philosophy and the social sciences (still in the making at the time), but also of medicine and public health issues, which led him to take charge of a real politics of knowledge.”

- Pierre Macherey, author of "Hegel or Spinoza",

“Keck gives us a profound re-reading of Lucien Lévy-Bruhl’s life-long quest for “another thought” in the pursuit of an affective logic of signs and community, a knowledge by sentiment, which is also a semiotic of the accident – different from that of the state and its symbols – and entangled with the torn history of the French Third Republic, the Dreyfus trial, and the rootlessness of French colonial violence. Retracing the larger historical tapestry within which the realization of such a knowledge by sentiment could unfold, Keck stresses the border figure of “the sentinel,” a contingent being in between worlds, pointing us to the always uncertain possibilities of other futures and lives.”

- Stefania Pandolfo, author of "Knot of the Soul: Madness, Psychoanalysis, Islam",