Full Idea
Leibniz's Law (the indiscernibility of identicals) appears to be crucial to our understanding of identity, and, more particularly, to our understanding of distinctness.
Gist of Idea
Indiscernibility is basic to our understanding of identity and distinctness
Source
Harold Noonan (Identity [2009], §2)
Book Reference
'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.2
A Reaction
True, but indiscernibility concerns the epistemology, and identity concerns the ontology.