title: Neo4j: Get all nodes in a graph, even those that are unconnected by relationships
body: <p>Using Cypher how can I get all nodes in a graph? I am running some testing against the graph and I have some nodes without relationships so am having trouble crafting a query.</p>
  
  <p>The reason I want to get them all is that I want to delete all the nodes in the graph at the start of every test.</p>