Читать книгу Twentieth-Century Philosophy of Science: A History (Third Edition) - Thomas J. Hickey - Страница 33

Many philosophers of science such as Rudolf Carnap in his Logical Syntax of Language distinguish two levels of language, object language and metalanguage.

Object language is used to describe the nonlinguistic real world.

Metalanguage is used to describe language, either object language or metalanguage.

The language of science is typically expressed in the object-language perspective, while much of the discourse in philosophy of science is in the metalinguistic perspective. Terms such as “theory” and “explanation” are examples of expressions in metalanguage.