SUMMARY. — Georges Canguilhem wrote several papers and a book before publishing his 1943 Essay concerning some problems related to the normal and the pathological. In these less well known publications, he begins by taking his inspiration from the French philosopher Alain and suggests a philosophy based on a rebellion against «fact-worshipping » ; he then uses Bergson' s thinking to broach a reflection on the place of technics in life, and he eventually elaborates a philosophy of his own on technics and creation. Those early insights reappear in Canguilhem' s later work on the history of science, and thus may lead to a clearer understanding of his critique of psychology and his deep interest in medicine, together with his passionate denial ...