Tetractys of Pythagoras

triangle distributing numbers 1 to 10 in four rows many levels of symbolism (Unity / Power / Harmony / Kosmos; Fire / Air / Water / Earth; Point / Line / Triangle / Tetrahedron ) A Pythagorean prayer : "Bless us, divine number, thou who generated gods and men! O holy, holy Tetractys, thou that containest the root and source of the eternally flowing creation! For the divine number begins with the profound, pure unity until it comes to the holy four ..."