Within his range his perception of truth was as rapid and unfailing as an instinct. Without difficulty he separated the specious from the solid, gave great weight to evidence, but was skeptical and cautious about receiving it. Though a collector of details, he was never incumbered by them. No one was less likely to make the common mistake of thinking that a particular instance established a general proposition. He sought for rules of universal application, and was industrious in the accumulation of facts, because he knew how many are needed to prove the simplest truth. The accuracy of his mental operations, united with great courage, made him careless of authority. He clung to a principle because he thought it true, not because others thought it so. There is no indication that he valued an opinion the more because great men of former ages had favored it. His self-reliance was shown in his unwillingness to employ servants. Even when very feeble, he refused to permit any one to assist him. He had extraordinary power of condensation, and, always seeing the gist of a matter, he often exposed an argument of hours by a single sentence. Some of his brief papers, like the one on Banking, contain the substance of debates, which have since been made, filling volumes. He was peculiar in his manner of stating his conclusions, seldom revealing the processes by which he arrived at them. He sets forth strange and disputed doctrines as if they were truisms. Those who have studied "The Prince" for the purpose of understanding its construction will not think us fanciful when we find a resemblance between Jefferson's mode of argumentation and that of Machiavelli. There is the same manner of approaching a subject, the same neglect of opposing arguments, and the same disposition to rely on the force of general maxims. Machiavelli exceeded him in power of ratiocination from a given proposition, but does not seem to have been able to determine whether a given proposition was right or wrong. In force of mind Jefferson has often been surpassed: Hamilton was his superior. As an executive officer, where action was required, he could not have been distinguished. It is true, he was a successful President, but neither the time nor the place demanded the highest executive talents. When Governor of Virginia, during the Revolution, he was more severely tried, and, although some excuse may be made for him, he must be said to have failed.