Among the remarkable men of modern times there is perhaps none whose fame is purer from reproach than that of Thaddeus Kosciusko. His name is enshrined in the ruins of his unhappy country, which, with heroic bravery and devotion, he sought to defend against foreign oppression and foreign domination. Kosciusko was born at Warsaw about the year 1746. He was educated at the School of Cadets, in that city, where he distinguished himself so much in scientific studies as well as in drawing, that he was selected as one of four students of that institution who were sent to travel at the expense of the state, with a view of perfecting their talents. In this capacity he visited France, where he remained for several years, devoting himself to studies of various kinds. On his return to his own country he entered the army, and obtained the command of a company. But he was soon obliged to expatriate himself again, in order to fly from a violent but unrequited passion for the daughter of the Marshal of Lithuania, one of the first officers of state of the Polish court. [Illustration: Thaddeus Kosciusko.] He bent his steps to that part of North America which was then waging its war of independence against England. Here he entered the army, and served with distinction as one of the adjutants of General Washington. While thus employed, he became acquainted with Lafayette, Lameth, and other distinguished Frenchmen serving in the same cause, and was honored by receiving the most flattering praises from Franklin, as well as the public thanks of the Congress of the United Provinces. He was also decorated with the new American order of Cincinnatus, being the only European, except Lafayette, to whom it was given. At the termination of the war he returned to his own country, where he lived in retirement till the year 1789, at which period he was promoted by the Diet to the rank of major-general. That body was at this time endeavoring to place its military force upon a respectable footing, in the vain hope of restraining and diminishing the domineering influence of foreign powers in what still remained of Poland. It also occupied itself in changing the vicious constitution of that unfortunate and ill-governed country--in rendering the monarchy hereditary, in declaring universal toleration, and in preserving the privileges of the nobility, while at the same time it ameliorated the condition of the lower orders. In all these improvements Stanislas Poniatowski, the reigning king, readily concurred; though the avowed intention of the Diet was to render the crown hereditary in the Saxon family. The King of Prussia (Frederick William II.), who, from the time of the treaty of Cherson, in 1787, between Russia and Austria, had become hostile to the former power, also encouraged the Poles in their proceedings; and even gave them the most positive assurances of assisting them, in case the changes they were effecting occasioned any attacks from other sovereigns.