Full Idea
The apparent logical form of the proposition need not be its real logical form.
Gist of Idea
Apparent logical form may not be real logical form
Source
Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 4.0031), quoted by J. Alberto Coffa - The Semantic Tradition from Kant to Carnap 6 'The incom'
Book Reference
Coffa,J.Alberto: 'The Semantic Tradition from Kant to Carnap' [CUP 1993], p.109
A Reaction
This is one of the key doctrines of modern analytic philosophy.