This book deals with the history of the life and works of Aristotle, known as one of the famous philosophers. This great philosopher was born at Stagira, or Stageira, in Macedonia, 384 B. C. His father, physician to Amyntas II., king of Macedonia, commenced the education of his son, intending to prepare him for his own profession; and the studies pursued by the latter with this object, doubtless laid the foundation for that lore of natural history, which he displayed through life, and which he cultivated with such success. Aristotle lost both his parents while he was still young. After their death, he was brought up under Proxenes, a citizen of Mysia, in Asia Minor, who had settled in Stagira. Aristotle testified his gratitude to Proxenes and his wife, by directing, in his will, that statues of them should be executed at his expense and set up as his parents. He also educated their son Nicanor, to whom he gave his daughter Pythias in marriage. In his eighteenth year, Aristotle left Stagira and went to Athens, the centre of letters and learning in Greece—doubtless attracted thither by the fame of the philosopher, Plato. It appears, however, that during the three first years of his residence there, Plato was absent on a visit to Sicily. There can be no doubt that Aristotle paid particular attention to anatomy and medicine, as appears both from his circumstances in youth, and what we know of his best writings. It is also probable, as is indicated by some statements of ancient writers, that for a space he practised, like Locke, the healing art; he must, however, from an early age, have devoted his whole time to the study of philosophy and the investigation of nature, and have abandoned all thoughts of an exclusively professional career.