Full catalogue record in Fihrist: Union Catalogue of Manuscripts from the Islamicate WorldKnown in Europe as the Secreta secretorum, this book contains the supposed advice of Aristotle to Alexander the Great on government, science, medicine, astrology &c. The original was written in Syriac, though naturally enough it professes to have been transcribed from the Greek. The Arabic version was made in the 9th century CE.Leaf.