Is it Al-Kindi (c. 801) Baghdad (in what is now Iraq) who had interests in in, and wrote about philosophy, logic, ethics, and mathematics and is often called the Father of Arab Philosophy? :)
i remember when I was a kid, i wrote the author of a book series i read (Encyclopedia Brown) and he actually sent me a letter back with a personal note on the side. it still hangs in a frame in my elementary school library