After 1908 Young Turk Revolution, and especially the proclamation of the Republic in 1923, a nationalist idleology of Turanism and Kemalism contributed to the revival of Tengrism. Islamic censorship was abolished, which allowed an objective study of the pre-Islamic religion of the Turks. The Turkish language was purified of Arabic, Persian and other borrowings. A number of figures, if they did not officially abandon Islam, but adopted Turkic names, such as Mustafa Kemal Atatürk ("Atatürk" — "father of Turks") and the historian of religion and ideologist of the Kemalist regime Ziya Gökalp ("Gökalp" — "sky hero").