Triad of the Goddess
Love. Death. Rebirth; Maiden, Nymph, Mother, Waning, Waxing and Full Moon. Robert Graves in The White Goddess described the Triple Goddess in other ways, including Mother-Bride-Layer-out and Maiden-Nymph-Hag. In his 1929 book, Moonchild, Crowley identified the Triple Goddess as Artemis-Diana-Isis (Maiden), Persephone (Lover), and Hecate (Crone). He associated her with the full moon and heaven (Diana), the new moon and hell (Hecate), and the half moon, a state between heaven and hell (Persephone).
Many worship the "Triple Goddess" of maiden, mother, and crone, the Maiden representing enchantment, inception, expansion, the promise of new beginnings, birth, youth and youthful enthusiasm, represented by the waxing moon; The Mother - ripeness, fertility, sexuality, fulfilment, stability, power and life represented by the full moon and the Crone wisdom, repose, death, and endings represented by the waning moon.
The triple goddess sign is identified with Greek moon goddesses:
Artemis - the Maiden, because she was the virgin goddess of the hunt;
Selene - the Mother, for she was the mother of Endymion's children and
Hecate - the Crone, as she was associated with the underworld and magic, and so considered to be "Queen of Witches".
This representation includes her many aspects, incorporating the elements and seasons associated with her as well.