God is not an avenger, but an infinite creating and loving power. Spiritism is not a belief. There are no rituals, no dogma, no socials institution and no hierarchy. The actual alternative is to believe in an unverificated doctrine or to ask reality to enlarge out our knowledge. It's all the difference between religion and philosophy.
Spiritism is a philosophy.
Natural laws have been discovered through experimental studies. Reincarnation is not a punitive karma but a perpetual evolution. Neither angels nor demons, only desincarnated spirits populate the next world. They are no miracles but natural phenomena. Spiritism is a christian formula of feature liberty and dignity for all the people, every nations and every races.