The Triple Goddess represents the three phases of the Moon and the three stages of feminine life.
Maiden —
New beginnings
Youth, independence, curiosity
Growth, potential, creativity
Often associated with the waxing Moon
Mother —
Creation, nurturing, fertility
Love, abundance, strength
Protection and caring
Associated with the full Moon
Crone —
Wisdom and life experience
Intuition, transformation
Endings, release, and spiritual knowledge
Associated with the waning Moon
Together, the three represent the cycle of birth → life → death/rebirth, as well as the idea that life continually moves through phases of growth, transformation, and renewal.