Full Idea
Meinong insisted (à la Anselm) that any possible object of thought - even a self-contradictory one - has being of a sort even though only a few such things are so lucky as to exist in reality as well.
Gist of Idea
Meinong said all objects of thought (even self-contradictions) have some sort of being
Source
report of Alexius Meinong (The Theory of Objects [1904]) by William Lycan - Philosophy of Language Ch.1
Book Reference
Lycan,William G.: 'Philosophy of Language' [Routledge 2000], p.14
A Reaction
['This idea gave Russell fits' says Lycan]. In the English-speaking world this is virtually the only idea for which Meinong is remembered. Russell (Idea 5409) was happy for some things to merely 'subsist' as well as others which could 'exist'.
Related Idea
Idea 5409 Normal existence is in time, so we must say that universals 'subsist' [Russell]