§ 398. In this view of the matter, let us now proceed to consider the rules, by which it ought to be interpreted; for, if these rules are correctly laid down, it will save us from many embarrassments in examining and defining its powers. Much of the difficulty, which has arisen in all the public discussions on this subject, has had its origin in the want of some uniform rules of interpretation, expressly or tacitly agreed on by the disputants. Very different doctrines on this point have been adopted by different commentators; and not unfrequently very different language held by the same parties at different periods. In short, the rules of interpretation have often been shifted to suit the emergency; and the passions and prejudices of the day, or the favour and odium of a particular measure, have not unfrequently furnished a mode of argument, which would, on the one hand, leave the constitution crippled and inanimate, or, on other hand, give it an extent and elasticity, subversive of all rational boundaries.
§ 399. Let us, then, endeavour to ascertain, what are the true rules of interpretation applicable to the constitution; so that we may have some fixed standard, by which to measure its powers, and limit its prohibitions, and guard its obligations, and enforce its securities of our rights and liberties.
§ 400. I. The first and fundamental rule in the interpretation of all instruments is, to construe them according to the sense of the terms, and the intention of the parties. Mr. Justice Blackstone has remarked, that the intention of a law is to be gathered from the words, the context, the subject-matter, the effects and consequence, or the reason and spirit of the law.[1] He- ↑ 1 Black. Comm. 59, 60. See also Ayliffe's Pandects, B. 1, tit. 4, p. 25, &c.; 1 Domat. Prelim. Book, p. 9; Id. Treatise on Laws, ch. 12, p. 74.
