Avicenna
![Portrait of Avicenna on an Iranian [[postage stamp]]](https://upload.wikimedia.org/wikipedia/commons/e/e7/1950_%22Avicenna%22_stamp_of_Iran.jpg)
His most famous works are ''The Book of Healing'', a philosophical and scientific encyclopedia, and ''The Canon of Medicine'', a medical encyclopedia which became a standard medical text at many medieval universities and remained in use as late as 1650. Besides philosophy and medicine, Avicenna's corpus includes writings on astronomy, alchemy, geography and geology, psychology, Islamic theology, logic, mathematics, physics, and works of poetry.
Avicenna wrote most of his philosophical and scientific works in Arabic, but also wrote several key works in Persian, while his poetic works were written in both languages. Of the 450 works he is believed to have written, around 240 have survived, including 150 on philosophy and 40 on medicine. Provided by Wikipedia
21
Published: 1995.
Superior document: Die Geistesgeschichte und ihre Methoden ; 19