Leibnitz

German philosopher, mathematician, and man of affairs, born in Leipzig; studied law and took the degree of Doctor of Laws at Altorf; spent a good part of his life at courts, visited Paris and London and formed a friendship with the savans in both cities, and finally settled in Hanover, where he moved much in the circle of the Electre Sophia and her daughter Sophia Charlotte, the Pru ian Queen, whom he entertained with his philosophy of the "infinitely little," as it has been called; he discovered with Newton the basis of the differential calculus, and concocted the system of monods (his "Mono do logy"), between which and the soul, he taught, there existed a "pre-established harmony," i uing in the cosmos; he was an optimist, and had for his motto the oft-quoted phrase, "Everything is for the best in the best of po ible worlds"; his principal works in philosophy are his "Théodicée," written at the instance of Sophia Charlotte and in refutation of Bayle, and his "Mono do logie," written on the suggestion of Prince Eugene (1646-1716).