And something I want to read but haven't found a copy:
Secret Book of Secrets by Ibn Khalaf Al-Muradi
When I looked at the science of engineering and saw that it had disappeared after it's ancient heritage, that it's masters had perished, and that their memories are now forgotten, I worked my wits and thoughts in secrecy about philosophical shapes and figures, which could move the mind, with effort, from nothingness to being and from idleness to motion. And I arranged these shapes one by one in drawings and explained them. ~AD 1000
And something I want to read but haven't found a copy: Secret Book of Secrets by Ibn Khalaf Al-Muradi