In the other view of the subject, and the only remaining one which it is my intention to present at this time, is involved the expediency of embarking in a system of internal improvement without a previous amendment of the Constitution explaining and defining the precise powers of the Federal Government over it. Assuming the right to appropriate money to aid in the construction of national works to be warranted by the cotemporaneous and continued exposition of the Constitution, its insufficiency for the successful prosecution of them must be admitted by all candid minds. If we look to usage to define the extent of the right, that will be found so variant and embracing so much that has been overruled as to involve the whole subject in great uncertainty and to render the execution of our respective duties in relation to it replete with difficulty and embarrassment. It is in regard to such works and the acquisition of additional territory that the practice obtained its first footing. In most, if not all, other disputed questions of appropriation the construction of the Constitution may be regarded as unsettled if the right to apply money in the enumerated cases is placed on the ground of usage. This subject has been one of much, and, I may add, painful, reflection to me. It has bearings that are well calculated to exert a powerful influence upon our hitherto prosperous system of government, and which, on some accounts, may even excite despondency in the breast of an American citizen. I will not detain you with professions of zeal in the cause of internal improvements. If to be their friend is a virtue which deserves commendation, our country is blessed with an abundance of it, for I do not suppose there is an intelligent citizen who does not wish to see them flourish. But though all are their friends, but few, I trust, are unmindful of the means by which they should be promoted; none certainly are so degenerate as to desire their success at the cost of that sacred instrument with the preservation of which is indissolubly bound our country's hopes. If different impressions are entertained in any quarter; if it is expected that the people of this country, reckless of their constitutional obligations, will prefer their local interest to the principles of the Union, such expectations will in the end be disappointed; or if it be not so, then indeed has the world but little to hope from the example of free government. When an honest observance of constitutional compacts can not be obtained from communities like ours, it need not be anticipated elsewhere, and the cause in which there has been so much martyrdom, and from which so much was expected by the friends of liberty, may be abandoned, and the degrading truth that man is unfit for self-government admitted. And this will be the case if _expediency_ be made a rule of construction in interpreting the Constitution. Power in no government could desire a better shield for