Akbar and his chief advisor, Abu'l Faz'l (who wrote Akbar–nama, a year–by–year account of Akbar's reign) linked kingship with divinity, redefining the ruler as a military, strategic, and spiritual leader. Recognizing that hatred among the various religious groups threatened to undermine the empire, Akbar, himself a Muslim, promoted racial tolerance and religious freedom under the policy of "universal tolerance" or "sulahkul." He appointed Hindus to high positions in his cabinet, married Hindu women and abolished taxes levied against both Hindus and non–Muslims. A student of comparative religion, he welcomed visitors of all faiths—including Jains, Jesuits, Hindus and Zoroastrians—to his court. Discussions with these visitors led him to develop his own religious teachings, Din–i–Ilahi or "divine faith," that sought to transcend sectarian religion. Music, art and literature flourished in Akbar's cosmopolitan court. Although he never learned to read and may have been dyslexic, he collected an imperial library of over 24,000 volumes and commissioned translations of many works, including the Ramayana and Mahabharata. Akbar's fort at Agra that included five hundred buildings and his city of Fatehpur Sikri illustrate the architectural style developed under his rule.