From the Heliconian Muses let us begin to sing, who hold the great and holy mount of Helicon, and dance on soft feet about the deep-blue spring and the altar of the almighty son of Cronos,  and, when they have washed their tender bodies in Permessus or in the Horse's Spring or Olmeius, make their fair, lovely dances upon highest Helicon and move with vigorous feet.
Thence they arise and go abroad by night,  veiled in thick mist, and utter their song with lovely voice, praising Zeus the aegis-holder, and queenly Hera of Argos who walks on golden sandals, and the daughter of Zeus the aegis-holder bright-eyed Athena, and Phoebus Apollo, and Artemis who delights in arrows,  and Poseidon the earth holder who shakes the earth, and revered Themis, and quick-glancing1Aphrodite, and Hebe with the crown of gold, and fair Dione, Leto, Iapetus, and Cronos the crafty counsellor, Eos, and great Helius, and bright Selene,  Earth, too, and great Oceanus, and dark Night, and the holy race of all the other deathless ones that are for ever.
And one day they taught Hesiod glorious song while he was shepherding his lambs under holy Helicon, and this word first the goddesses said to me—  the Muses of Olympus, daughters of Zeus who holds the aegis:
“Shepherds of the wilderness, wretched things of shame, mere bellies, we know how to speak many false things as though they were true; but we know, when we will, to utter true things.”
'So said the ready-voiced daughters of great Zeus, and they plucked and gave  me a rod, a shoot of sturdy laurel, a marvellous thing, and breathed into me a divine voice to celebrate things that shall be and things that were aforetime; and they bade me sing of the race of the blessed gods that are eternally, but ever to sing of themselves both first and last. 
But why all this about oak or stone? Come you, let us begin with the Muses who gladden the great spirit of their father Zeus in Olympus with their songs, telling of things that are and that shall be and that were aforetime with consenting voice.
Unwearying flows the sweet sound  from their lips, and the house of their father Zeus the loud-thunderer is glad at the lily-like voice of the goddesses as it spreads abroad, and the peaks of snowy Olympus resound, and the homes of the immortals.
And they, uttering their immortal voice, celebrate in song first of all the revered race of the gods  from the beginning, those whom Earth and wide Heaven begot, and the gods sprung of these, givers of good things.
Then next, the goddesses sing of Zeus, the father of gods and men, as they begin and end their strain, how much he is the most excellent among the gods and supreme in power. 
And again, they chant the race of men and strong giants, and gladden the heart of Zeus within Olympus,—the Olympian Muses, daughters of Zeus the aegis-holder.