Literary works written in Bangla are known as Bengali literature. In the ninth century AD, the formation of literature in Bangla began. The oldest monastery of Bangla literature, Charudapatha, composed of Buddhist doctrine compiled by the tenth and twelfth century AD. Ancient and medieval Bangla literature was poetical. The Bengali literature of this period was formed centered on the religious beliefs of Hinduism, Islam and Bengal. The main theme of this literature was Mangalakavya, Vaishnava Padabali, Shaktaapadabali, Vaishnava Sansibanyi, Ramayana, Mahabharata and Bangabanabad of Bhagavata, Pirasahitya, Nath Sahayatya, Baul Padabali and Islamic Dharmashya. Modernity began in Bengali literature in the eighteenth century. In the nineteenth century, the era of Bengal's renaissance marked the beginning of a new era in Bengali literature centered around Kolkata city. From this time onward, instead of religious content, human, humanism and human psychology became the main issues of Bengali literature. After the partition of India in 1947, Bangla literature was divided into two categories: Literature of Kolkata-centric West Bengal and literature of Dhaka-centric East Pakistan - Bangladesh. Now Bangla literature is considered one of the world's most rich literary texts.