CONAN had been told dark tales of hidden where intense smoke drifted up incessantly from black altars were kidnapped humans were sacrificed before a great coiled serpent, whose fearsome head swayed for ever in the haunted shadows.From, "The Hour of the Dragon"
Persecution caused the followers of Asura to hide their temples with cunning art, and to veil their rituals in obscurity; and this secrecy, in turn, evoked more monstrous suspicion and tales of evil.
But CONAN's was the broad tolerance of the barbarian, and he had refused to persecute the followers of Asura or to allow the people to do so on no better evidence than was presented against them, rumours and accusations that could not be proven. "If they are black magicians," he had said, "how will they suffer you to harry them? If they are not, there is no evil in them. Crom's devils! Let men worship what gods they will."
Page 643-4 "The Complete Chronicles of CONAN"