The triangle with its apex upward
indicates the male principle, downward the female; the two typifying,
at the same time, spirit and matter. This world within the infinite universe
is the microcsom within the macrocosm, as in the Jewish Kabbala. It is
the symbol of the womb of the universe, the terrestial egg, whose archetype
is the golden mundane egg. It is from within this spiritual bosom of mother
nature that proceed all the great saviours of the universe - the avatars
of the invisible Deity. (Vol. 2, p.226;
quoted in Barry Montgomery, MA UUC 2003.)