Full Idea
Haecceitism attributes to each individual a primitive identity or thisness, as opposed to the sort of essentialism that gives non-trivial conditions sufficient for transworld identity.
Gist of Idea
Haecceitism attributes to each individual a primitive identity or thisness
Source
Graeme Forbes (The Metaphysics of Modality [1985], 6.6)
Book Reference
Forbes,Graeme: 'The Metaphysics of Modality' [OUP 1985], p.148
A Reaction
'Haecceitism' is the doctrine that things have primitive identity. A 'haecceity' is a postulated property which actually does the job. The key point of the view is that whatever it is is 'primitive', and not complex, or analysable. I don't believe it.