These statistics, however, prove that, if the earnings of commerce and navigation were added, the annual value of the products of Massachusetts _per capita_ would be at least $300, and three times that of Maryland. In estimating values _per capita_, we must find the earnings of commerce very large, as a single merchant, in his counting house, engaged in an immense trade, and employing only a few clerks, may earn as much as a great manufacturing corporation, employing hundreds of hands. Including commerce, the value, _per capita_, of the products and earnings of Massachusetts exceeds not only those of _any State in our Union_, BUT OF THE WORLD; and would, at the same rate, make the value of its annual products three hundred billions of dollars; and of our own country, upward of nine billions of dollars per annum. Such, under great natural disadvantages, is the grand result achieved in Massachusetts, by education, science, industry, free schools, free soil, free speech, _free labor_, free press, and free government. The facts prove that freedom is progress, that 'knowledge is power,' and that the best way to appreciate the value of property and augment wealth most rapidly, is to invest a large portion of it in schools, high schools, academies, colleges, universities, books, libraries, and the press, so as to make labor more productive, because more skilled, educated, and better directed. Massachusetts has achieved much in this respect; but when she shall have made high schools as free and universal as common schools, and the attendance on both compulsory, so as to qualify every voter for governing a State or nation, she will have made a still grander step in material and intellectual progress, and the results would be still more astounding.