EN
Descartes started his philosophy when scepticism was very popular in France (M. de Montaigne's followers). Meditations are under influence of sceptical tradition even if Descartes does not mention it. His methodical scepticism was very serious in fact (the threat of sceptical conclusion was real). Descartes made the traditional sceptical reasons deeper by constructing two hypotheses: of dream and evil demon. He stopped sceptical doubting by discovering his own existence and tried to rescue the rest of human knowledge. There are many critical remarks about his answer to his own sceptical hypotheses. Descartes' role in the history of scepticism is the role of the author of evil demon hypothesis (recently modified as the brain-in-a-vat hypothesis).