The present Secretary of State was long regarded as the leading Free-Soil Senator, and after the present Republican party came into existence, he naturally assumed a prominent position among its advocates. In caution, in profound foresight, in coolness and affability of temper, and in perspicuity and logical shrewdness of oratory, he has been without a superior since the death of Webster. He somewhat resembles Earl Russell in the prudence and care with which he treats political questions, and the vigilance with which he notices every symptom of popular tendencies and popular desires. His circumspection is constant, and the imperturbability of his character enables him to be ever on his guard, and protects him from the enunciation of an unpopular idea. Never permitting himself to be annoyed at ever so bitter a taunt, perfectly self-possessed, and always mindful of the courtesy due to his colleagues, and the respect due to the most dignified body in the nation, he has generally succeeded in completely disarming his less prudent antagonists. In general debate, his coolness and mental balance enabled him to cope with the most formidable opponents, and although at times the overwhelming eloquence of Douglas got the better of the more philosophic orator, such an occurrence was rare, and a triumph was gained over him only by the greatest exertions of the greatest orators. His labored speeches, as will be testified to by all who have perused them, are rich in profound thought, a clear discernment and comprehension of events, causes, and results, and occasionally in passages of stately and brilliant eloquence. Graceful rhetoric and shrewd logic appear to be ever at his command, as he has occasion, in the course of argument, to resort to one or the other, to illustrate or to enforce his reasoning. In person, Mr. Seward is of about medium hight, rather stooping, with reddish-gray hair, an aquiline nose, and dull, sleepy, blue eyes. His countenance is hardly intellectual, and no one would suppose, on seeing him for the first time, that he was a man of conspicuous ability. He is affable to every one, and enters freely into conversation with all who call upon him; nevertheless, he is extremely guarded at all times in expressing his opinions, and will never betray himself into an unguarded sentiment. His manner of speaking is extremely easy, and occasionally dull; and when in the Senate, he used to take his position by leaning against the pillar behind his seat, twirling in one hand his spectacles, while with the other he enforced, by slight gestures, the more striking passages of his speech. His delivery was far from animated, and his intonation was rather conversational than declamatory. He has a quiet dignity at all times, which is yet consistent with a polite and amiable demeanor; and while the former inspires the respect, the latter elicits the esteem of all who approach him.