Tycho Brahe, born in 1596 of illustrious Danish stock, was adopted by an uncle, and entered the University of Copenhagen at thirteen, where multiplication, division, philosophy, and metaphysics were taught. When he was fourteen, an eclipse of the sun occurred, which aroused so much interest that he decided to devote himself to the study of the heavenly bodies. He was able to construct a series of interesting instruments on a progressive scale of size, and finally to erect the great Observatory of Uraniberg on the Island of Hven. Strange to say, his scientific conclusions had for him profound astrological significance. An important new star he declared was "at first like Venus and Jupiter and its effects will therefore first be pleasant; but as it then became like Mars, there will next come a period of wars, seditions, captivity, and death of princes, and destruction of cities, together with dryness and fiery meteors in the air, pestilence, and venomous snakes. Lastly, the star became like Saturn, and thus will finally come a time of want, death, imprisonment, and all kinds of sad things!" He says that "a special use of astronomy is that it enables us to draw conclusions from the movements in the celestial regions as to human fate." He labored on his island twenty years. He was always versifying, and inscribed a poem over the entrance of his underground observatory expressing the astonishment of Urania at finding in the interior of the earth a cavern devoted to the study of the heavens. Galileo[17] was born in 1564 of a Florentine noble, who was poor. As a youth he became an excellent lutist, then thought of devoting himself to painting, but when he was seventeen studied medicine, and at the University of Pisa fell in love with mathematics. Isaac Newton,[18] born in 1642, very frail and sickly, solitary, had a very low piece in the class lists of his school; wrote poetry, and at sixteen tried farming. In one of his university examinations in Euclid be did so poorly as to incur special censure. His first incentive to diligent study came from being severely kicked by a high class boy. He then resolved to pass him in studies, and soon rose to the head of the school. He made many ingenious toys and windmills; a carriage, the wheels of which were driven by the hands of the occupants, and a clock which moved by water; curtains, kites, lanterns, etc.; and before he was fourteen fell in love with Miss Storey, several yeas older than himself. He entered Trinity College at Cambridge at eighteen.