Wovon man nicht sprechen kann, darüber muss man schweigen - Ludwig Wittgenstein

The essential business of language is to assert or deny facts. Given the syntax of a language, the meaning of a sentence is determinate as soon as the meaning of the component words is known. In order that a certain sentence should assert a certain fact there must, however the language may be constructed, be something in common between the structure of the sentence and the structure of the fact.

The agreement or disagreement or its sense with reality constitutes its truth or falsity.

The world is my world: this is shown by the fact that the limits of language stand for the limits of my world…I am my world.