Ivan Illich, Austrian priest and philosopher (died 2002)

Ivan Dominic Illich was an Austrian Catholic priest, theologian, philosopher, and social critic. His 1971 book Deschooling Society criticises modern society's institutional approach to education, an approach that he argued demotivates and alienates individuals from the process of learning. His 1975 book Medical Nemesis, importing to the sociology of medicine the concept of medical harm, in which he argues that industrialised society impairs quality of life through processes such as overmedicalisation, the pathologisation of normal conditions, and increased dependency on medical institutions. Illich called himself "an errant pilgrim."