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 tresses of others. About the year 1683, he composed his great work, The Principia, or Mathematical Principles of Natural Philosophy. In 1688, the memorable year of the Revolution, he was chosen to represent the university in parliament, and the honor thus conferred on him was repeated in 1701. His great merit at last attracted the notice of those who had it in their power to bestow substantial rewards, and he was appointed warden of the Mint, an office for which his patient and accurate investigations singularly fitted him, and which he held with general approbation till his death. Honors and emoluments at last flowed upon him. Leibnitz, having felt envious of the discoveries of Newton, tried to revenge himself by transmitting a problem, which he thought would show his superiority, by baffling the skill of the English mathematician. It was received by Newton in the evening, after his usual day's labor at the Mint, and he solved it before he retired to rest. After this there was no further attempt made to traduce his fame. In 1705 he received the honor of knighthood from Queen Anne.

Newton's benevolence of disposition led him to perform all the minor duties of social life with great exactness; he paid and received frequent visits; he assumed no superiority in his conversation; he was candid, cheerful, and affable: his society was therefore much sought, and he submitted to intrusions on his valuable time without a murmur; but by early rising, and by a methodical distribution of his hours he found leisure to study and compose, and every moment which he could command, he passed with a pen in his hand and a book before him. He was generous and charitable—one of his maxims being, that those who gave nothing before death, never, in fact, gave at all. His wonderful faculties were very little impaired, even in extreme old age; and his cheerful disposition, combined with temperance and a constitution naturally sound, preserved him from the usual infirmities of life. He was of middle size, with a figure inclining to plumpness; his eyes were animated, piercing, and intelligent; the general expression of his countenance was full of life and kindness; his sight was preserved to the last; and his hair in the decline of his days was white as snow. The severe trial of bodily suffering was reserved for the last stage of his existence, and he supported it with characteristic resignation. On the 20th of March 1727, he expired at the advanced age of eighty-four years.

The character of Newton cannot be delineated and discussed like that of ordinary men; it is so beautiful, that the biographer dwells upon it with delight, and the inquiry, by what means he attained an undisputed superiority over his fellow-creatures, must be both interesting and useful. Newton was endowed with talents of the highest order; but those who are less eminently gifted, may study his life with advantage, and derive instruction from every part of his career. With a power of intellect almost divine, he demonstrated the motions of the planets, the orbits of the comets, and the cause of the tides of the ocean; he investigated with complete success, the properties of light and colors, which no man before had even suspected; he was the diligent, sagacious, and faithful interpreter of nature, while his researches all tended to illustrate the power, wisdom, and goodness of the Creator. Notwithstanding, also, his reach of understanding and knowledge, his modesty was such, that he thought nothing of his own acquirements; and he left behind him the celebrated saying, 'that he