'The psychology of guilt as debt is a recurrent theme in Tim Winton’s fiction. A number of scholars have recently examined the theme of haunting in Winton’s Cloudstreet (1991), arguing that the ghosts which appear in the story represent an engagement with Australia’s colonial past, in particular the mistreatment of its Indigenous peoples. The latest of these, Michael R. Griffiths, highlights the shortcomings of Winton’s treatment of this theme, contending that Winton’s text might be read as a kind of excuse, in the name of naïveté, for colonial abuses. Given that Nicholas Birns (among others) has noted a new maturity in Winton’s work from The Turning (2004) onward, a fresh examination of such themes in Winton’s work is warranted. This essay does so through a reading of the short story ‘Aquifer’. Examining the story’s treatment of the psychology of guilt and debt, the essay explores how Winton tries to resolve the moral and historical problems he raises in regard to Australian culture through the ethical figure of the neighbour, drawn in particular from the biblical parable of the Good Samaritan. By showing the centrality of the neighbour to Winton’s work through references to In the Winter Dark (1988), Cloudstreet, Breath (2009), ‘Aquifer,’ and a newspaper editorial by Winton on the humanitarian treatment of refugees, this paper seeks to provide a new critical window through which to understand his evolving ethical ideas about Australia’s past and future.'