23. HESIODUM: see n. on 54. -- Simoniden: Simonides of Ceos (not S. of Amorgos), one of the greatest Greek lyric poets, lived from 556 to about 469 B.C. -- STESICHORUM: of Himera in Sicily, also a lyric poet; lived from about 630 to about 556 B.C. -- ISOCRATEN GORGIAN: nn. on 13. -- PHILOSOPHORUM PRINCIPES: 'in the first rank of philosophers'. -- PYTHAGORAN: neither the date of his birth nor that of his death can be determined; he 'flourished' about 530. He lived mostly in the Greek settlements of lower Italy, where his school existed for some centuries after his death. -- DEMOCRITUM: of Abdera, one of the originators of the theory of atoms; said to have lived from 460 to 361 or 357 B.C. -- XENOCRATEN after Plato, Speusippus was the first head of the Academic School; Xenocrates succeeded him. He lived from 397 to 315 or 313. -- ZENONEM: of Citium in Cyprus, founder of Stoicism, born about 357, is said to have lived to the age of 98. -- CLEANTHEN: he followed Zeno in the presidency of the Stoic school. His age at death is variously given as 99 and as 80 years. -- QUEM VIDISTIS: see Introd. It is rather curious that Cic. should make Cato speak with admiration of Diogenes, to whom he had shown great hostility. -- DIOGENEN: Cic. probably wrote in _-an, -en,_ not in _-am, -em_ the accusatives of Greek proper names in _-as, -es_. -- STOICUM: to distinguish him from Diogenes the Cynic. -- AGITATIO: Cic. uses _agitatio_ and _actio_ almost interchangeably; cf. _agitatio rerum_ in De Or. 3, 88 with _actio rerum_ in Acad. 2, 62 and elsewhere. _Actus_ in this sense occurs only in silver Latin.