What is intended by the phrase "internal improvements"? What does it embrace and what exclude? No such language is found in the Constitution. Not only is it not an expression of ascertainable constitutional power, but it has no sufficient exactness of meaning to be of any value as the basis of a safe conclusion either of constitutional law or of practical statesmanship. President John Quincy Adams, in claiming on one occasion, after his retirement from office, the authorship of the idea of introducing into the administration of the affairs of the General Government "a permanent and regular system" of internal improvements, speaks of it as a system by which "the whole Union would have been checkered over with railroads and canals," affording "high wages and constant employment to hundreds of thousands of laborers;" and he places it in express contrast with the construction of such works by the legislation of the States and by private enterprise. It is quite obvious that if there be any constitutional power which authorizes the construction of "railroads and canals" by Congress, the same power must comprehend turnpikes and ordinary carriage roads; nay, it must extend to the construction of bridges, to the draining of marshes, to the erection of levees, to the construction of canals of irrigation; in a word, to all the possible means of the material improvement of the earth, by developing its natural resources anywhere and everywhere, even within the proper jurisdiction of the several States. But if there be any constitutional power thus comprehensive in its nature, must not the same power embrace within its scope other kinds of improvement of equal utility in themselves and equally important to the welfare of the whole country? President Jefferson, while intimating the expediency of so amending the Constitution as to comprise objects of physical progress and well-being, does not fail to perceive that "other objects of public improvement," including "public education" by name, belong to the same class of powers. In fact, not only public instruction, but hospitals, establishments of science and art, libraries, and, indeed, everything appertaining to the internal welfare of the country, are just as much objects of internal improvement, or, in other words, of internal utility, as canals and railways. The admission of the power in either of its senses implies its existence in the other; and since if it exists at all it involves dangerous augmentation of the political functions and of the patronage of the Federal Government, we ought to see clearly by what clause or clauses of the Constitution it is conferred.