He escaped exile in 1899 and made his way to Paris where he began to emerge as a staunch advocate of Turkish nationalism. He returned to Russia in 1903 and began to write extensively on the topic. He garnered most attention for his 1904 work Üç Tarz-ı Siyaset (Three Policies), which was originally printed in the Cairo-based magazine Turk. The work called on Turks to abandon the multi-ethnic Ottoman Empire and instead to turn wholly to their Turkish identity. Initially dismissed as an extremist, his ideas began to find more favour after the Young Turk Revolution and founding of the Second Meşrutiyet (limited form of democracy). He was one of the founders of Ittifaq al-Muslimin.
With a growing feeling of nationalism in the country, he returned and founded the journal Türk Yurdu, which sought to become the intellectual force behind the growth of nationalism. Differing from the regime somewhat, he defined the Turkish in purely ethnic terms and came to look outside the borders of the country for a kinship with other Turkic peoples. he also called for creation of a national economy and a move away from Islamic values (an area in which he clashed with Ziya Gökalp, as Akçura wanted a secular Turkey, fearing that Pan-Islamism would hinder nationalist development), meaning that he was largely sympathetic to Kemal Atatürk. As a result he developed into a prominent ideologue and advocate of Pan-Turkism during the early republican period, whose writings became widely read and who became one of the leading university professors in Istanbul. He died in Istanbul in 1935, interred at the Edirnekapı Şehitliği (cemetery) in Istanbul.