The Devimahatmya, the oldest and most significant source for Goddess mythology, depicts the goddess Mahasaraswati, Mahalakshmi, and Mahakali in three separate manifestations.
The narrative starts with the creation of the universe.
The deity Brahma is attacked by two demons called Madhu and
Kaitabha as he emerges from the lotus sprouting from the god Vishnu's navel.
Brahma attempts to avoid the demons, but Vishnu is unable to
assist him since he is deep sleeping, overpowered by the Goddess's influence.
She only leaves Vishnu when Brahma praises the Goddess,
allowing him to awaken.
The demons' brains are then clouded, allowing Vishnu to
deceive (and slay) them.
Saraswati is the goddess of art, learning, and culture in
the Hindu pantheon—anything involving the life and activity of the intellectual
and aesthetic faculties.
Mahasaraswati is also associated with intelligence, implying
that she has the power to influence people's perceptions.
See David R. Kinsley's Hindu Deities, 1986, for further
information about Mahasaraswati and the Hindu goddesses.
You may also want to read more about Hinduism here.
Be sure to check out my writings on religion here.