It is possible you are referring to a few different works or authors with similar names. While there is no widely known single "long paper" with that exact title, the most likely intended works are:
by John Piper , a highly influential book (and often studied as a long-form essay) on living for eternal purposes rather than trivial comfort. Life by M. Piper
by Martha Piper , which examines the history and mythology of piracy. It is possible you are referring to a