The great fame acquired by Hippocrates, would seem to have been won by a steadfast adherence to the sagacity of common sense. He had no chemical knowledge, and his acquaintance with anatomy appears to have been scanty and uncertain; yet, knowing how to turn a rare experience to account, and confining his operations mainly to the watching and assisting of Nature, he succeeded in obtaining credit for superhuman skill. His nephew, who is reputed to have possessed almost equal merit with his uncle, was murdered in a fit of jealousy, by Hippocrates, who shortly afterwards fell a sacrifice to the torments of remorse. A great number of works are extant under his name, but most of them were written by his disciples. [From the marble in the Louvre, which has been verified by a medal bearing the name of Hippocrates, and showing a perfect resemblance to the head. There are several busts of Hippocrates in existence--one in the Capitoline Museum, another at Florence, and two in the Louvre.] 15. ISOCRATES. _Rhetorician._ Born at Athens, B.C. 436. Died B.C. 338. Aged 98.] It is said that Isocrates was the first man to describe the true value and objects of oratory. His language is the purest Attic; his style, which he elaborated with great pains, elegant and polished. As teacher of rhetoric, he became the instructor of the chief youths of his time. He composed several discourses on great political occasions, and amassed considerable wealth. He had throughout life a constitutional timidity, and a weakness of voice that prevented him from speaking in the assemblies of the people. Socrates had been one of his masters. His character appears to have been spotless. [From the bust in the Villa Albani at Rome, bearing the name of Isocrates. A statue of him was sculptured by Leochares for the temple of Eleusis, and another is described by Pausanias as in the temple of Jupiter Olympius, which statue is spoken of by Christodorus, as being at Constantinople in his time.] 16. PLATO. _Greek Philosopher._ [Born at Athens, B.C. 430. Died B.C. 347. Aged 83.]