Prayer to Mnemosyne by Pindar

But I pray to Mnamosyna (Mnemosyne, Memory), the fair-robed child of Ouranos (Uranus, Heaven), and to her daughters [the Mousai (Muses)], to grant me ready resource; for the minds of men are blind, whosoever, without the maids of Helikon (Helicon), seeketh the steep path of them that walked it by their wisdom.


Pindar, Paean 7