Percy Shelley published his four-act lyrical drama titled "Prometheus Unbound" in 1820. His version was written in response to the version of myth as presented by Aeschylus and is orientated to the high British Idealism and high British Romanticism prevailing in Shelley's own time. Shelley, as the author himself discusses, admits the debt of his version of the myth to Aeschylus and the Greek poetic tradition which he assumes is familiar to readers of his own lyrical drama. For example, it is necessary to understand and have knowledge of the reason for Prometheus' punishment if the reader is to form an understanding of whether the exoneration portrayed by Shelley in his version of the Prometheus myth is justified or unjustified. The quote of Shelley's own words describing the extent of his indebtedness to Aeschylus has been published in numerous sources publicly available.