Final answer:
In Serj Tankian's 'Prometheus Bound,' Hermes suggests there is nothing like a 'rebel cause,' highlighting the theme of defiance in the rock opera.
Step-by-step explanation:
According to Hermes in Serj Tankian's Rock Opera "Prometheus Bound," there is nothing like a rebel cause. This line is from the character Hermes, embodying the spirit of defiance and uprising against tyranny which is a central theme in both the original Greek play and its rock adaptation by Serj Tankian. The rock opera translates the ancient tale into a modern context, using music to amplify the themes of resistance and rebellion.