Douze siècles séparent le déclin du Mithraïsme romain de l'aube de la Franc-maçonnerie. Douze siècles pendant lesquels les mystères de Mithra sont restés plus secrets que jamais.
Between the 1st and 4th centuries, Mithraism developed throughout the Roman world. Much material exists, but textual evidence is scarce. The only ancient work that fills this gap is Porphyry’s intense and complex essay.