An eternal statement is a statement

Statement

Statement may refer to:* A kind of expression in language *Statement , declarative sentence that is either true or false*Statement , the smallest standalone element of an imperative programming language...

 whose token instances

Type-token distinction

In disciplines such as philosophy and knowledge representation, the type-token distinction is a distinction that separates an abstract concept from the objects which are particular instances of the concept...

 all have the same truth value. For instance, every inscription or utterance

Utterance

In spoken language analysis an utterance is a complete unit of speech. It is generally but not always bounded by silence.It can be represented and delineated in written language in many ways. Note that in such areas of research utterances do not exist in written language, only their representations...

of the sentence "On July 15, 2009 it rains in Boston." has the same truth value, no matter when or where it is asserted. This type of statement is distinguished from others in that its context will not influence its truth value.