Four great Aspects of the Mother, four of her leading Powers and Personalities have stood in front in her guidance of this universe and in her dealings with the terrestrial play.
One is her personality of calm wideness and comprehending wisdom and tranquil benignity and inexhaustible compassion and sovereign and surpassing majesty and all-ruling greatness.
Another embodies her power of splendid strength and irresistible passion, her warrior mood, her overwhelming will, her impetuous swiftness and world-shaking force.
A third is vivid and sweet and wonderful with her deep secret of beauty and harmony and fine rhythm, her intricate and subtle opulence, her compelling attraction and captivating grace.
The fourth is equipped with her close and profound capacity of intimate knowledge and careful flawless work and quiet and exact perfection in all things.
Wisdom, Strength, Harmony, Perfection are their several attributes and it is these powers that they bring with them into the world, manifest in a human disguise in their Vibhutis and shall found in the divine degree of their ascension in those who can open their earthly nature to the direct and living influence of the Mother. To the four we give the four great names, Maheshwari, Mahakali, Mahalakshmi, Mahasaraswati.
Ref: The Mother with Letters on The Mother