The play is all about Socialism and Capitalism. Basically, the Birlings are the Capitalists in this scenario and they can then be applied to other situations, while Eva is the victim of Capitalism. The whole idea of the play was to try and bring about social change; to make people aware of how we all needed to care about everyone else. So the Capitalists all want to preserve their money and their power without realising the effect it has on the lower class. The class divide is another important feature of the book that closely links with the ideas of Capitalism and Socialism.