“What do I mean by commitment? I'll flash back to 1821: Shelley's claim, in "The Defence of Poetry", that "poets are the unacknowledged legislaters of the world". Piously overquoted, mostly out of context, it's taken to suggest that simply by virtue of compossing verse, poets exert some exemplary moral power - in a vaue, unthreatening way. (...) He did NOT say, "Poets are the unacknowledged interior decorators of the world".”