Ḥayy ibn Yaqẓān () is an Arabic philosophical novel and an allegorical tale written by Ibn Tufail (c. 1105 – 1185) in the early 12th century in Al-Andalus. Names by which the book is also known include the ('The Self-Taught Philosopher'); and English: The Improvement of Human Reason: Exhibited in the Life of Hai Ebn Yokdhan. Ḥayy ibn Yaqẓān was named after an earlier Arabic philosophical romance of the same name, written by Avicenna during his imprisonment in the early 11th century, even though both tales had different stories. The novel greatly inspired Islamic philosophy as well as major Enlightenment thinkers. It's the most translated text from Arabic, after the Quran and the One Thousand and One Nights. History Hayy ibn Yaqdhan, along with three poems, is all that remains of the writings of Ibn Tufail (c. 1105 – 1185), who lived under the Almohads and served Sultan Abu Yaqub Yusuf. The book was influential among medieval Jewish scholars at the Toledo School of Translators run by Raymond de Sauvetât, and its impact can be seen in The Guide for the Perplexed of Maimonides. It was "discovered" in the West after Edward Pococke of Oxford, while visiting a market in Damascus, found a manuscript of Hayy ibn Yaqdhan made in Alexandria in 1303 containing commentary in Hebrew. His son, Edward Pococke Jr. published a Latin translation in 1671, subtitled "The Self-Taught Philosopher." George Keith the Quaker translated it into English in 1674, Baruch Spinoza called for a Dutch translation, Gottfried Wilhelm Leibniz championed the book in German circles, and a copy of the book went to the Sorbonne. Daniel Defoe (c. 1660 – 1731), author of Robinson Crusoe, was heavily influenced by the work as well as by the memoir of the Scottish castaway Alexander Selkirk. In the Muslim world, the book is an honored Sufi text. Plot The story revolves around Ḥayy ibn Yaqẓān, a little boy who grew up on an island in the Indies under the equator, isolated from the people, in the bosom of an antelope that raised him, feeding him with her milk. Ḥayy has just learned to walk and imitates the sounds of antelopes, birds, and other animals in his surroundings. He learns their languages, and he learns to follow the actions of animals by imitating their instinct. He makes his own shoes and clothes from the skins of animals, and studies the stars.