卡涅阿德斯

立场

Carneades sharpened Arcesilaus’ arguments against the Stoic theory of knowledge, which Chrysippus had meanwhile defended and refined; he is credited with the remark that without Chrysippus he himself would not have existed. No impression carries a mark of truth that a false impression could not also carry. Carneades nevertheless described how one can act and inquire without certainty. According to Sextus Empiricus, impressions can be more or less persuasive (pithanon): persuasive in themselves; persuasive and not contradicted by any other impression; and persuasive, uncontradicted and thoroughly tested. The more important the matter, the more testing it requires. Whether Carneades endorsed this view or only put it forward for the sake of argument was already disputed among his pupils; Clitomachus said he had never discovered what Carneades really thought. In ethics he drew up a scheme of all possible views of the highest good, the Carneadea divisio, which Cicero used to sort the schools (De finibus V 16–23). Against the Stoics he argued that their gods could not exist as described, that divination has no basis, and that the principle that every statement is true or false does not imply that everything is fated; against the Epicureans, that freedom does not need a swerve of the atoms. Much of Cicero’s Academica, On the Nature of the Gods and On Divination draws on Carneades through Clitomachus. Sextus Empiricus set Pyrrhonism apart from the New Academy, and Augustine’s Against the Academics (386) was written against Carneades and Arcesilaus.

生平与背景

Carneades was born around 214/213 BCE in Cyrene in North Africa. In Athens he studied in the Academy and, according to Diogenes Laertius, learned dialectic from the Stoic Diogenes of Babylon. By the middle of the second century BCE he was head of the Academy. In 155 BCE Athens sent him to Rome, together with Diogenes of Babylon and the Peripatetic Critolaus, to plead for the reduction of a fine imposed over the town of Oropus. His lectures drew crowds of young Romans, and Cato the Elder is said to have urged the Senate to send the philosophers home quickly. A story that goes back to Cicero’s Republic, preserved by Lactantius, has him praising justice one day and arguing against it the next; how far it is reliable is disputed. Carneades wrote nothing. His pupil Clitomachus, a Carthaginian, recorded his arguments in many books, all lost. He gave up the headship in old age and died around 129/128 BCE, at 85.

主要作品

• No writings (Carneades taught only orally; the books of his pupil Clitomachus are lost)