[Speech on the last Census.]
The developments of statistics are causing history to be re-written. Till recently the historian studied nature in the aggregate, and gave us only the story of princes, dynasties, sieges, and battles. Of the people themselves—the great social body, with life, growth, forces, elements, etc.—he told us nothing. Now, statistical inquiry leads us into the hovels, houses, workshops, mines, fields, prisons, hospitals, and all places where human nature displays its weakness and strength. In these explorations he discovers the seeds of national growth and decay, and thus becomes the prophet of his generation.
Statistical science is indispensable to modern statesmanship. In legislation, as in physical science, it is beginning to be understood that we can control terrestrial forces only by obeying their laws. The legislator must formulate in his statistics not only the national will but also those great laws of social life revealed by statistics. He must study society rather than black-letter learning. He must learn the truth that "society usually prepares the crime, and the criminal is only the instrument that completes it," that statesmanship consists rather in removing causes than in punishing, or evading results.