Walter Russell (1871–1963, USA) is a unique medium and seer, who remained misunderstood by his contemporaries and was eventually forgotten. Possessing a unique gift of clairvoyance, Walter Russell left us many diagrams explaining various aspects of the structure of the Universe, as well as many books and lecture materials. This book is a translation of his work "The Sacrament of Light", first published in 1947. The translation contains more than 80 diagrams and drawings by Walter Russell, including his unique interpretation of the periodic table of chemical elements, and also adds missing pages from the published electronic version of the original.