The historical setting
The House of Wisdom, also known as the Grand Library of Baghdad, was a major Abbasid-era public academy and intellectual center in Baghdad. In popular reference, it acted as one of the world's largest public libraries during the Islamic Golden Age, and was founded either as a library for the collections of the fifth Abbasid caliph Harun al-Rashid (r. 786–809) in the late 8th century or as a private collection of the second Abbasid caliph al-Mansur (r. 754–775) to house rare books and collections in the Arabic language. During the reign of the seventh Abbasid caliph al-Ma'mun (r. 813 – 833 AD), it was turned into a public academy and a library. It was destroyed in 1258 during the Mongol siege of Baghdad.
The primary sources behind the House of Wisdom narrative date between the late eighth century and the thirteenth century, and most importantly include the references in Ibn al-Nadim's (d. 995) al-Fihrist.
Al-Ma'mun's reign
Under the sponsorship of Caliph al-Ma'mun (r. 813–833), economic support of the House of Wisdom and scholarship in general was greatly increased. Al-Ma'mun, under the tutelage of his father, Caliph Harun al-Rashid, memorized the Quran word for word under the eyes of leading religious scholar of the court. Al-Ma'mun's mistakes were instantly corrected. It was a common trait amongst Muslim poets, scientists, and authors to memorize their original texts for public lectures, which were typically done inside a mosque. This practice appeared to be ingrained inside al-Ma'mun's intellectual capabilities. His love for science was so great that it was said that he preferred scientific texts as the spoils of war.
Furthermore, Abbasid society itself came to understand and appreciate the value of knowledge, and support also came from merchants and the military. It was easy for scholars and translators to make a living, and an academic life was indicative of high status in society; scientific knowledge was considered so valuable that books and ancient texts were sometimes preferred as war booty rather than riches. Indeed, Ptolemy's Almagest was claimed as a condition for peace by al-Ma'mun after a war between the Abbasids and the Eastern Roman Empire.
Translations from Greece, India, and Persia
The Translation Movement lasted for two centuries and was a large contributing factor to the growth of scientific knowledge during the golden age of Arabic science. Ideas and wisdom from other cultures around the world, Greece, India, and Persia, were translated into Arabic contributing to further advances in the Islamic Empire. An important goal during this time was to create a comprehensive library that contained all of the knowledge gained throughout this movement. Advances were made in areas like mathematics, physics, astronomy, medicine, chemistry, philosophy, and engineering. The influential achievement of translation revealed to scholars in the empire to the limitless body of early knowledge in the Ancient Near East and Greek traditions, developing the birth of primary scholarship beyond philosophy and scholarship.
The engagement across arts and sciences assorts and stretches intelligence realms and brings growth to new methods of understanding. This was accomplished through academic knowledge and creative rehearsal. The House of Wisdom was known for being a space for scholarly growth and contribution which during the time greatly contributed to the Translation Movement. The Translation Movement started in this House of Wisdom and lasted for over two centuries.
Original contributions
Besides their translations of earlier works and their commentaries on them, scholars at the Bayt al-Ḥikma produced important original research. For example, the noted mathematician al-Khwarizmi worked in al-Mamun's House of Wisdom and is famous for his contributions to the development of algebra. Abū Yūsuf Yaqūb ibn Isḥaq al-Kindī was also another historical figure that worked at the House of Wisdom. He studied cryptanalysis but he was also a great mathematician. Al-Kindī is the most famous for being the first person to introduce Aristotle's philosophy to the Arabic people. He fused Aristotle's philosophy with Islamic theology, which created an intellectual platform for philosophers and theologians to debate over 400 years.
A fellow expert on Aristotle was Abū Uthmān al-Jāḥiẓ, who was born in Basra around 776 but he spent most of his life in Baghdad. Al-Ma'mun employed al-Jāḥiẓ as a personal tutor for his children, but he had to dismiss him because al-Jāḥiẓ was "goggled-eyed", i.e., he had wide, staring eyes which made him frightening to look at. Al-Jāḥiẓ was one of the few Muslim scholars who was deeply concerned with biology. He wrote Book of Animals, which discusses the way animals adapt to their surroundings, similarly to Aristotle's History of Animals.