Whether there was a real Jabir in the 8th century or not, his name would become the most famous in alchemy. He paved the way for most of the later alchemists, including al-Kindi, al-Razi, al-Tughrai and al-Iraqi, who lived in the 9th-13th centuries. His books strongly influenced the medieval European alchemists and justified their search for the philosopher's stone. In the Middle Ages, Jabir's treatises on alchemy were translated into Latin and became standard texts for European alchemists. These include the Kitab al-Kimya (titled Book of the Composition of Alchemy in Europe), translated by Robert of Chester (1144); and the Kitab al-Sab'een (Book of Seventy) by Gerard of Cremona (before 1187). Marcelin Berthelot translated some of his books under the fanciful titles Book of the Kingdom, Book of the Balances, and Book of Eastern Mercury. Several technical Arabic terms introduced by Jabir, such as alkali, have found their way into various European languages and have become part of scientific vocabulary. Max Meyerhoff states the following on Jabir ibn Hayyan: "His influence may be traced throughout the whole historic course of European alchemy and chemistry."