Monemosyne (ancient Greek: Μνημοσύνη， Mnemosyne is a goddess of memory, language, and writing in Greek mythology, one of the twelve Titans. According to Hesiod's "Theology," she was the daughter of Uranus and Gaia, who married Zeus and gave birth to nine muses. However, Xu Guinus provided another version of her background, stating that she was born to Etel (or Ochianus) and Gaia. In Rome, she is called Moneta, or Mnemosyne in English.
In many myths and legends, as the mother of the Muse, she was initially a patron of oral narrative poets. She is also an ancient goddess of time [2-3] and a secondary oracle goddess. The underground oracle she was responsible for was in Trophonius, Boethia.

Mother of Muses
In traditional mythology, she gave birth to nine Muses with Zeus, and Menemosyne was the fifth wife of the great god Zeus. On the Pieria slope at the foothills of Olympus, he disguised himself as a shepherd and seduced her, sleeping with her for nine nights, giving birth to the nine literary goddesses Muses.

Poetic God Confusion
Monemosyne is sometimes confused with one of the three goddesses of poetry before the Nine Muses (including Melete, Monemo, and Aod, who are the Muses of the Titanic tribe) [5-6], indicating that 'memory' is sometimes not necessarily the mother of the Muses, but one of the Muses.
Memory Fountain
Monemosyne also holds a spring source in the underworld, as well as the spring of Lete (Λ) ήθη， That is, forget the river) relative. In the oldest surviving texts, such as those of Ptelia or Hipbonne (the epitaph of the six step yangyige around the fourth century BC), it is mentioned that the souls of the deceased first arrived in the underworld: [7]
On the right side of Hades' residence, you will see a pool of spring water,
There is a white swan standing not far away:
Don't get close to this Wangquan water, just be by the side,
You will also see another spring, the clear water
Flowing from the swamp of Monemosyne: the gardeners are guarding here
The soul must drink the water of this "other spring" in order for its soul to retain eternal memory. Once it drinks the water of "this spring" - the water of Lete Spring, it will forget everything. Plato and Pausanias also had the same viewpoint [8], but Pausanias believed that these two fountains actually existed, located near the Trophonius cave in the Boethian region of Greece [9].

Orphesian significance
One of the most important deities in Orpheus religion is Mohnemosyne. Because memory has a special and fundamental significance for Orpheus believers. The memory here is obviously not a memory of ordinary trivialities, but a memory of the true origin and living conditions of humanity. Remembering that humans have a part of the territory of Titan, which conceals the origin of the human god and its cosmic significance of birth - as stated in the remaining parts of Ptelia:
You must tell them, 'I am the son of the earth and the starry sky, and I am the descendant of God. You all know this.'
This memory is truly necessary to save the souls of the dead. In the Orphesian landscape of the other shore, memory is symbolically represented as a spring that the deceased must drink.

In ancient art works, Monemosyne is often depicted as a woman holding her chin in contemplation. Normally, she stays with the Muses, but occasionally there are single person sculptures of her. Some poets often cite her name in their poetry.
For example, the French Renaissance poet Joon Sa wrote a hymn titled "Ode to the French Minister of the Seal, Michel de Robidard" [1]:
The God of Memory, the Queen of Elothelia,
Cupid made her a mother,
Nine daughters were born at once
Due to the work of Russian poet Pushkin's "Poetic Rhyme, Clear and Pleasant Friend" [10]
Out of nostalgia for our early meeting,
Only the goddess Mu Ne Mo Xu Ne
Suddenly came to comfort him in his difficulties.
So the couple of Apollo
In the quiet jungle of Mount Helicon,
Sacrifice a joyful fruit