Postmodern theories of truth are difficult to articulate in strict terms because postmodern theorists tend to eschew hard and fast definitions. Ironically, every definition of truth that philosophers have developed falls prey to the question, "Is it true?
Scholars have spent countless hours trying to understand Kant on this point since it seems like the mind interacts with the noumena in some way. Percieving: A Philosophical Study.
Far from every phenomenon of consciousness possesses the same degree of veracity. Taken as a whole, our knowledge of nature and the history of society is not complete, but it contains many grains of the absolute.
In human knowledge taken as a whole the specific gravity of the absolute in truth is constantly increasing. Naming and Necessity.
Giambattista Vico was among the first to claim that history and culture were man-made. How do we know if something is true? Short Little Lessons in Logic. Maybe you're deeply concerned about politics and what politicians are claiming or what policy should be supported or overturned.
Strawson holds that a similar analysis is applicable to all speech acts, not just illocutionary ones: "To say a statement is true is not to make a statement about a statement, but rather to perform the act of agreeing with, accepting, or endorsing a statement.
The principle of correspondence.
Propositions are true or false regardless of whether anyone believes them.