Verificationism
Verificationism, also known as the verification principle or the verifiability criterion of meaning, is a doctrine in philosophy which asserts that a statement is cognitively meaningful only if it is empirically verifiable (can be confirmed through experience) or an analytic truth (true by virtue of its definition or logical form). Typically expressed as a criterion of meaning, it rejects traditional statements of metaphysics, theology, ethics and aesthetics as meaningless in terms of conveying truth value or factual content, reducing them to emotive expressions or "pseudostatements" that are neither true nor false.