THE EQUINOX for though by him is form visible, he maketh it visible only to destroy it. And he saith: The light is come to the darkness, and the darkness is made light. Then is light married with light, and the child of their love is that other darkness, wherein they abide that have lost name and form. Therefore did I kindle him that had not understanding, and in the Book of the Law did I write the secrets of truth that are like unto a star and a snake and a sword. And unto him that understandeth at last do I deliver the secrets of truth in such wise that the least of the little children of the light may run to the knees of the mother and be brought to understand. And thus shall he do who will attain unto the mystery of the knowledge and conversation of his Holy Guardian Angel: First, let him preparea chamber, of which the walls and the roof shall be white, and the floor shall be covered with a carpet of black squares and white, and the border thereof shall be blue and gold. And if it be in a town, the room shall have no window, and if it be in the country, then it is better if the window be in the roof. Or, if it be possible, let this invocation be per- formed in a temple prepared for the ritual of passing through the Tuat. From the roof he shall hang a lamp, wherein is a red glass, to burn olive oil. And this lamp shall he cleanse and make ready after the prayer of sunset, and beneath the lamp shall be an altar, foursquare, and the height shall be thrice half of the breadth or double the breadth. And upon the altar shall be a censer, hemispherical, sup- 110