Thus counterposed, the two chief actors represent the fundamental antitheses of good and evil, liberty and despotism, love and hate.

They give the form of personality to Shelley's Ormuzd-Ahriman dualism already expressed in the first canto of "Laon and Cythna"; but, instead of being represented on the theatre of human life, the strife is now removed into the reign of abstractions, vivified by mythopoetry.

Prometheus resists Jove to the uttermost, endures all torments, physical and moral, that the tyrant plagues him with, secure in his own strength, and calmly expectant of an hour which shall hurl Jove from heaven, and leave the spirit of good triumphant.

That hour arrives; Jove disappears; the burdens of the world and men are suddenly removed; a new age of peace and freedom and illimitable energy begins; the whole universe partakes in the emancipation; the spirit of the earth no longer groans in pain, but sings alternate love-songs with his sister orb, the moon; Prometheus is re-united in indissoluble bonds to his old love, Asia.

Asia, withdrawn from sight during the first act, but spoken of as waiting in her exile for the fated hour, is the true mate of the human spirit.