 Sebastian Petrycy of Pilzno (1554–1626) laid stress, in the theory of knowledge, on experiment and induction; and in psychology, on feeling and will; while in politics he preached democratic ideas.Petrycy's central feature was his linking of philosophical theory with the requirements of practical national life.In 1601–18, a period when translations into modern languages were still rarities, he accomplished Polish translations of Aristotle's practical works.