Kitap 1
prol.16
Philosophers may be divided into dogmatists and sceptics: all those who make assertions about things assuming that they can be known are dogmatists; while all who suspend their judgement on the ground that things are unknowable are sceptics. Again, some philosophers left writings behind them, while others wrote nothing at all, as was the case according to some authorities with Socrates, Stilpo, Philippus, Menedemus, Pyrrho, Theodorus, Carneades, Bryson; some add Pythagoras and Aristo of Chios, except that they wrote a few letters. Others wrote no more than one treatise each, as Melissus, Parmenides, Anaxagoras. Many works were written by Zeno, more by Xenophanes, more by Democritus, more by Aristotle, more by Epicurus, and still more by Chrysippus.
prol.17
Some schools took their name from cities, as the Elians and the Megarians, the Eretrians and the Cyrenaics; others from localities, as the Academics and the Stoics; others from incidental circumstances, as the Peripatetics; others again from derisive nicknames, as the Cynics; others from their temperaments, as the Eudaemonists or Happiness School; others from a conceit they entertained, as Truthlovers, Refutationists, and Reasoners from Analogy; others again from their teachers, as Socratics, Epicureans, and the like; some take the name of Physicists from their investigation of nature, others that of Moralists because they discuss morals; while those who are occupied with verbal jugglery are styled Dialecticians.