10 HEROES OF SCIENCE. 



of men who had no other recommendation than 

 titles and riches, and was devoted to the study 

 of nature. These were the fruits of Aristoteles* 

 instruction, and it must be remembered that 

 Alexander differed entirely in his conduct from 

 the brutal conquerors who have been, over and over 

 again, the scourge and curse of mankind. 



Aristoteles lost his wife during this time, and 

 she left him an only daughter. Then Philip was 

 assassinated, and his son reigned at Macedon for 

 two years, and then began his great expedition 

 into Asia. Aristoteles accompanied his pupil to 

 Athens, and parted with him never to see him 

 again, but still to influence him for years. Un- 

 fortunately, however, Aristoteles recommended a 

 relation, named Callisthenes, to the young king, 

 and it was the cause of a rupture of friendship 

 in years to come. Left to himself, our hero re- 

 solved to open a school for the benefit of the 

 Athenian youth, and to teach good learning in 

 philosophy and nature. He chose a house near 

 a temple of Apollo Lyceius, which was called 

 the "Lyceum," and attached to it was a garden 

 with walks, where the instruction was given. The 

 Greek word for the walks was peripatua^ and the 

 school was called that of the peripatetics. His 

 habit was to give one lecture in the early part of 

 the day, on the more difficult parts of his teaching, 

 to his more advanced students ; and this was called 

 the morning walk, and lasted till the hour when 

 people dressed and anointed themselves. Another 



