Twelve rituals of the Fellowship of Isis, written by the FOI co-founder, Olivia Robertson. From the introduction: "The Rites in this Liturgy are not subjective, though they have subjective elements. The Powers described have been experienced, the visions seen, the effects gained through causes put into operation. And here we have the great division between those who have experienced magic through clairvoyance, clairaudience, levitation, telekinesis, mystical awakening - one or any of these - and those who have not. 'Those who know' cannot prove, cannot explain, cannot convince. All they can do is to provide a rainbow bridge whereby those who long for magical experience may attain some of this alchemical gold, obtained through transmutation of elements from one sphere to another." Olivia Robertson, co-founder of the Fellowship of Isis.