The name lemur, the clad of primates endemic to Madagascar, comes from a latin referring to ghost or spirit of the dead

1. Lemurs are a clade of primates endemic to the island of Madagascar. Named by Carl Linnaeus, the term comes from the Latin term lemures which refers to ghosts or spirits of the dead. Linnaeus named these animals lemurs because of the lemurs' nocturnal habits, reflective eyes, and eerie cries. Furthermore, it is believed among some people inhabitants of Madagascar that the souls of their ancestors live within the lemurs.
2. The Book of Five Rings is about the martial arts in general, written by the samurai warrior Miyamoto Musashi around 1645. It is considered a classic treatise on military strategy.