ABSTRACT
In dialogues like Theatetus, Phaedo and Sophist Plato seems explicitly interested in the connection between saying something about something, or denying something of something, and the being, or non-being of that thing. One thing Plato does make clear in those dialogues is that the truth or falsity of what is said is intimately correlated with the way things are or are not. In 1910 and 1912 Bertnard Russell held that truth and falsehood are properties of both statements and judgments (that is, beliefs), but that the truth or falsity of statements depends on the truth or falsity of judgments. Like Russell, Wittgenstein believed that truth could be accounted for by facts and that facts are in the world. In developing the "picture theory" in the Tractatus he made it clear that a proposition can be taken to be a picture, which is true just in case it "agrees" with "reality".
