What are the motifs in The Complete Plays by Aristophanes?

Conservatism is a recurring idea. There is no doubt that Aristophanes was an extreme conservative though his conservatism was very different than anything that would count as conservatism today. First and foremost his concern in many of his plays is to ridicule new ways of doing things, especially in the moral and political sphere. His conservatism looks back to the "good old days" before the war and before Cleon. It is partly a curmudgeonly conservatism and partly what you might call a "conservatism of fear." In many ways a fear of new things and innovation would have made sense in Aristophanes' Athens.