Quine - Empiricism

Those whose truth can be determined solely by examining the meanings of the words used in the statement

Two terms are cognitively synonymous if they can be substituted for each other in any statement without changing the truth value of the statement, except within words

Find a minimum of basic concepts such that, once a distinctive notation has been appropriated to each of them, it becomes possible to express any desired further concept by mere combination and iteration of our basic notations

Case and brevity in the statement of multifarious relations. Efficient and effective use of language to convey complex ideas with ease and brevity

Trying to understand the nature of logic itself and its relation to metaphysical concepts

Every meaningful statement is held to be translatable into a statement (true or false) about immediate experience

Statements are synonymous if and only if they are alike in the point of method of empirical confirmation