Truth has beauty, power and necessity. — Sylvia Ashton-Warner
truth : the body of real things, events, and facts — Webster
Truth is the property of being in accord with fact or reality. In everyday language, truth is typically ascribed to things that aim to represent reality or otherwise correspond to it, such as beliefs, propositions, and declarative sentences. Truth is usually held to be the opposite of falsehood. The concept of truth is discussed and debated in various contexts, including philosophy, art, theology, and science. Most human activities depend upon the concept, where its nature as a concept is assumed rather than being a subject of discussion; these include most of the sciences, law, journalism, and everyday life. Some philosophers view the concept of truth as basic, and unable to be explained in any terms that are more easily understood than the concept of truth itself. Most commonly, truth is viewed as the correspondence of language or thought to a mind-independent world. This is called the correspondence theory of truth. — Wikipedia
Art as a means to truth or knowledge One of the things that has been alleged to be the purpose of art is its cognitive function: art as a means to the acquisition of truth. Art has even been called the avenue to the highest knowledge available to humans and to a kind of knowledge impossible of attainment by any other means. — Encyclopædia Britannica
Here are links to pages about closely related subjects.