Burton's best-known achievements include traveling in disguise to Mecca, an unexpurgated translation of One Thousand and One Nights (also commonly called The Arabian Nights in English after Andrew Lang's abridgement), bringing the Kama Sutra to publication in English, and journeying with John Hanning Speke as the first Europeans to visit the Great Lakes of Africa in search of the source of the Nile. Burton extensively criticized colonial policies (to the detriment of his career) in his works and letters. He was a prolific and erudite author and wrote numerous books and scholarly articles about subjects including human behaviour, travel, falconry, fencing, sexual practices and ethnography.via en.wikipedia.org