Full Idea
No distinction can be drawn between a proposition and its content; no two distinct propositions can have the same content.
Gist of Idea
We can't distinguish a proposition from its content
Source
Michael Dummett (Thought and Reality [1997], 3)
Book Reference
Dummett,Michael: 'Thought and Reality (Gifford Lectures)' [OUP 2006], p.34
A Reaction
And one proposition cannot have two possible contents (ambiguity). Are we to say that a proposition supervenes on its content, or that proposition and content are identical? Ockham favours the latter.