After his stay of roughly a year and a half in the Russian capital, Križanić arrived in Tobolsk in Siberia, on 8 March 1661. He lived there for 15 years, surviving on a state stipend and working on the treatises "On Divine Providence", "On Politics", and "On Interpretation of Historic Prognostications" amongst others. In these books, written in his self-devised "Common Slavonic language" (a Pan-Slavonic grammar named "Grammatitchno Iskaziniye" that incorporated numerous Slavic languages), he set forth a comprehensive program of reforms required for the Russian state, including reforms to administration, Russian serfdom, economic policy, education, grammar, and Russia's primitive agricultural system. Many of the reforms he recommended were in fact carried out by Peter the Great, although there is no concrete evidence of Križanić's direct influence in his doing so. His "Politika," which he wrote from 1663-1666, was published by Peter Bezsonov ("Russia in the Seventeenth Century", 1859–60) and for the first time in English in 1985 and is his most well known and influential work.