Page:Joseph Story, Commentaries on the Constitution of the United States (1st ed, 1833, vol I).djvu/424

 384 goes on to justify the remark by stating, that words are generally to be understood in their usual and most known signification, not so much regarding the propriety of grammar, as their general and popular use; that if words happen to be dubious, their meaning may be established by the context, or by comparing them with other words and sentences in the same instrument; that illustrations may be further derived from the subject-matter, with reference to which the expressions are used; that the effect and consequence of a particular construction is to be examined, because, if a literal meaning would involve a manifest absurdity, it ought not to be adopted; and that the reason and spirit of the law, or the causes, which led to its enactment, are often the best exponents of the words, and limit their application.

§ 401. Where the words are plain and clear, and the sense distinct and perfect arising on them, there is generally no necessity to have recourse to other means of interpretation. It is only, when there is some ambiguity or doubt arising from other sources, that interpretation has its proper office. There may be obscurity, as to the meaning, from the doubtful character of the words used, from other clauses in the same instrument, or from an incongruity or repugnancy between the words, and the apparent intention derived from the whole structure of the instrument, or its avowed object. In all such cases interpretation becomes indispensable.