Full Idea
There are no pictures that are true a priori.
Gist of Idea
No pictures are true a priori
Source
Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 2.225)
Book Reference
Wittgenstein,Ludwig: 'Tractatus Logico-Philosophicus (Pears)', ed/tr. Pears,D. /McGuinness,B. [RKP 1961], p.10
A Reaction
This is part of the growing modern doubts about the scope or possibility of a priori knowledge. A 'picture' here is the mental model which is the meaning of a proposition.
Related Idea
Idea 23481 Propositions assemble a world experimentally, like the model of a road accident [Wittgenstein]