Most of Allama Iqbal's writings were devoted to a revival of Islam. In his presidential address to the Muslim League in 1930, he first suggested that the Muslims of northwestern India should demand a separate nation for themselves. Although many compilations of Iqbal's poetry also deliver his
message very eloquently, his foremost book Reconstruction of Religious Thought in Islam was intended to secure a vision of the spirit of Islam as emancipated from its Magian overlayings.
He encouraged Muslims to embrace ideals of brotherhood, justice, and service. His masterpiece is 'The Song of Eternity' (1932). Similar in theme to Dante's 'Divine Comedy', it relates the poet's ascent through all realms of thought and experience, guided by the 13th-century poet Jalal ad-Din ar-Rumi. He also wrote poetry in the Persian language. He tried to free the Muslim mind from the prevailing colonial mentality and from Muslims' own narrow self-interests, which is reflected in his classical work "Toloo-e-Islam" (Rise of Islam).