Proponents of several of the theories below have gone further to assert that there are yet other issues necessary to the analysis, such as interpersonal power struggles, community interactions, personal biases and other factors involved in deciding what is seen as truth.
In addition to highlighting such formal aspects of the predicate "is true", some deflationists point out that the concept enables us to express things that might otherwise require infinitely long sentences. For example, one cannot express confidence in Michael's accuracy by asserting the endless sentence:Michael says, 'snow is white' and snow is white, or he says 'roses are red' and roses are red or he says ... etc.
Deflationary principles do not apply to representations that are not analogous to sentences, and also do not apply to many other things that are commonly judged to be true or otherwise.
Several of the major theories of truth hold that there is a particular property the having of which makes a belief or proposition true. Pluralist theories of truth assert that there may be more than one property that makes propositions true: ethical propositions might be true by virtue of coherence. Propositions about the physical world might be true by corresponding to the objects and properties they are about.
The semantic theory of truth has as its general case for a given language:
where 'P' refers to the sentence (the sentence's name), and P is just the sentence itself.
Avicenna elaborated on his definition of truth later in Book VIII, Chapter 6:
Veritas est adæquatio intellectus et rei.
(Truth is the conformity of the intellect and things.)
The logical progression or connection of this line of thought is to conclude that truth can lie, since half-truths are deceptive and may lead to a false conclusion.