Things Not Seen is a 2000 first-person novel written by Andrew Clements and his third novel after Frindle and The Landry News. The story revolves around Bobby as he deals with his 'disease', tries to get back to normal, and even befriends a blind girl. The title is apparently taken from Hebrews 11:1,"Now faith is the substance of things hoped for, the evidence of things not seen." in the King James Version of the Bible.