Full Idea
As Peirce insisted, singularity as such cannot be described, it can only be given through actual world relations.
Gist of Idea
Singularity cannot be described, and it needs actual world relations
Source
François Recanati (Mental Files [2012], 2.2)
Book Reference
Recanati,François: 'Mental Files' [OUP 2012], p.21
A Reaction
[Peirce - Exact Logic, Papers 3, 1967, §419] This is the key idea for Recanati's case for basing our grasp of singular things on their relation to a mental file.