High Quality Content by WIKIPEDIA articles! Spiritism is a loose corpus of religious faiths having in common the general belief in the survival of a spirit after death. In a stricter sense, it is the religion, beliefs and practices of the people affiliated to the International Spiritist Union, based on the works of Allan Kardec and others. Formed in France in the 19th century, it soon spread to other countries, but today the only country where it has a significant number of adherents is Brazil.