The Senator from Delaware (Mr. Clayton) calls this metaphysical reasoning, which he says he cannot comprehend. If by metaphysics he means that scholastic refinement which makes distinctions without difference, no one can hold it in more utter contempt than I do; but if, on the contrary, he means the power of analysis and combination--that power which reduces the most complex idea into its elements, which traces causes to their first principle, and, by the power of generalization and combination, unites the whole in one harmonious system--then, so far from deserving contempt, it is the highest attribute of the human mind. It is the power which raises man above the brute--which distinguishes his faculties from mere sagacity, which he holds in common with inferior animals. It is this power which has raised the astronomer from being a mere gazer at the stars to the high intellectual eminence of a Newton or a Laplace, and astronomy itself from a mere observation of insulated facts into that noble science which displays to our admiration the system of the universe. And shall this high power of the mind, which has effected such wonders when directed to the laws which control the material world, be forever prohibited, under a senseless cry of metaphysics, from being applied to the high purposes of political science and legislation? I hold them to be subject to laws as fixed as matter itself, and to be as fit a subject for the application of the highest intellectual power. Denunciation may, indeed fall upon the philosophical inquirer into these first principles, as it did upon Galileo and Bacon, when they first unfolded the great discoveries which have immortalized their names; but the time will come when truth will prevail in spite of prejudice and denunciation, and when politics and legislation will be considered as much a science as astronomy and chemistry.