In *La nuit, tous les vieux sont gris*, Jérôme Pellissier treats old age as a social and political question rather than a private stage of life. The book examines how contemporary institutions, public attitudes, and everyday practices shape the experience of growing old, often turning aging into a form of exclusion. Through a critical lens, Pellissier explores the tensions between dependence and autonomy, memory and obsolescence, care and neglect. The result is a forceful reflection on how societies measure human value, confront vulnerability, and respond to an aging population. Written in French and issued in the early 2000s, the work is suited to readers interested in social criticism, gerontology, and the ethics of care.