Shelley, whose talents would otherwise have made him eligible, was an outcast from the first … They always knew where to draw the line and they drew it, emphatically, at Shelley. I was informed that Byron could be forgiven because, though he had sinned, he had been led into sin by the unfortunate circumstances of his youth, and had always been haunted by remorse, but that for Shelley's moral character there was nothing to be said since he acted on principle and therefore he could not be worth reading.
Percy Bysshe Shelley