Hesiod. Works and Days. (Lines 1-10).
Muses of Pieria who give glory through song, come hither, tell of Zeus your father and chant his praise. Through him mortal men are famed or un-famed, sung or unsung alike, as great Zeus wills. For easily he makes strong, and easily he brings the strong man low; easily he humbles the proud and raises the obscure, and easily he straightens the crooked and blasts the proud, -- Zeus who thunders aloft and has his dwelling most high. Attend thou with eye and ear, and make judgements straight with righteousness. And I, Perses, would tell of true things.