Kristeva: "filth is not a quality in itself, but it applies only to what relates to a boundary and, more particularly, represents the object jettisoned out of the boundary, its other side, a margin"
McCarthy 260: "She suggests of abjection that 'we may call it a border'"
see Mary Douglas [of Purity and Danger, referenced by McCarthy as someone Kristeva draws on]
"What interests her most is when inside and outside start getting confused" (261)