The centre of this circle is the centre of the Tau of ten squares which is in the midst, as shown in the illustration. The Tau and the circle together make one form of the Rosy Cross, the uniting of subject and object which is the Great Work, and which is symbolized sometimes as this cross and circle, sometimes as the Lingam-Yoni, sometimes as the Ankh or Crux Ansata, sometimes by the Spire and Nave of a church or temple, and sometimes as a marriage feast, mystic marriage, spiritual marriage, "chymical nuptials," and in a hundred other ways. Whatever the form chosen, it is the symbol of the Great Work. This place of his working therefore declares the nature and object of the "Work. Those persons who have supposed that the use of these symbols implied worship of the generative organs, merely attributed to the sages of every time and country minds of a calibre equal to their own. The Tau is composed often squares for the ten Sephiroth/ About this Tau is escribed a triangle, which is inscribed in the great Circle; but of the triangle nothing is actually marked but the three corners, the areas defined by the cutting of the lines bounding this triangle. This triangle is only visible in the parts which are common to two of the ^The Ten Sephiroth are the Ten Units. In one system of classification (see " 777 ") these are so arranged, and various ideas are so attributed to them, that they have been made to mean anything. The more you know, the more these numbers mean to you.