Spiritism is the set of laws and principles, as revealed by Superior Spirits, contained in the works of Allan Kardec, which constitute the Spiritist Codification: "The Spirits' Book", "The Mediums' Book", "The Gospel According to Spiritism", "Heaven and Hell", and "The Genesis".

"Spiritism is a science that deals with the nature, origin and destiny of Spirits, as well as their relationship with the corporeal world."
Allan Kardec.

"Spiritism realizes what Jesus said of the promised Counselor, by bringing knowledge of those things which allow Man to know where he came from, where he is going and why he is on Earth; so attracting mankind towards the true principles of God's Law and offering consolation through faith and hope."
Allan Kardec.