TWO:"Well ...! The Nieuwe Zijds Voorburgwal."The study of psychology with Plato stands in a fourfold relation to his general theory of the world. The dialectic method, without which Nature would remain unintelligible, is a function of the soul, and constitutes its most essential activity; then soul, as distinguished from body, represents the higher, supersensual element of existence; thirdly, the objective dualism of reality and appearance is reproduced in the subjective dualism of reason and sense; and lastly, soul, as the original spring of movement, mediates between the eternal entities which are unmoved and the material phenomena which are subject to a continual flux. It is very characteristic of Plato that he first strains an antithesis to the utmost and then endeavours to reconcile its extremes by the interposition of one or more intermediate links. So, while assigning this office to soul as a part of the universe, he224 classifies the psychic functions themselves according to a similar principle. On the intellectual side he places true opinion, or what we should now call empirical knowledge, midway between demonstration and sense-perception. Such at least seems to be the result reached in the Theaettus and the Meno. In the Republic a further analysis leads to a somewhat different arrangement. Opinion is placed between knowledge and ignorance; while the possible objects to which it corresponds form a transition from being to not-being. Subsequently mathematical reasoning is distinguished from the higher science which takes cognisance of first principles, and thus serves to connect it with simple opinion; while this again, dealing as it does with material objects, is related to the knowledge of their shadows as the most perfect science is related to mathematics.138
TWO:
TWO:When we look at a steam-engine there are certain impressions conveyed to the mind, and by these impressions we are governed in a train of reflection that follows. We may conceive of a cylinder and its details as a complete machine with independent functions, or we can conceive of it as a mechanical device for transmitting the force generated by a boiler, and this conception might be independent of, or even contrary to, specific knowledge that we at the same time possessed; hence the importance of starting with a correct idea of the boiler being, as we may say, the base of steam machinery.
TWO:Nor is it only the personality of Socrates that has been so variously conceived; his philosophy, so far as it can be separated from his life, has equally given occasion to conflicting interpretations, and it has even been denied that he had, properly speaking, any philosophy at all. These divergent presentations of his teaching, if teaching it can be called, begin with the two disciples to whom our knowledge of it is almost entirely due. There is, curiously enough, much the same inner discrepancy between Xenophons Memorabilia and those111 Platonic dialogues where Socrates is the principal spokesman, as that which distinguishes the Synoptic from the Johannine Gospels. The one gives us a report certainly authentic, but probably incomplete; the other account is, beyond all doubt, a highly idealised portraiture, but seems to contain some traits directly copied from the original, which may well have escaped a less philosophical observer than Plato. Aristotle also furnishes us with some scanty notices which are of use in deciding between the two rival versions, although we cannot be sure that he had access to any better sources of information than are open to ourselves. By variously combining and reasoning from these data modern critics have produced a third Socrates, who is often little more than the embodiment of their own favourite opinions.
