Thus the aim of many of Plato’s Dialogues, which conclude without any positive affirmation (Vol. I. p. 406; II. p. 13), is to show that the immediately existent, the many things that appear to us, although we may have quite true conceptions of them, are still not in themselves, in an objective sense, the true, because they alter and are determined through their relation to something else and not through themselves; thus we must even in the sensuous individuals consider the universal, or what Plato has called the Idea (p. 29). The sensuous, limited, and finite is, in fact, both itself and the other, which is also considered as existent; and thus there is an unsolved contradiction, for the other has dominion in the first. We have been before reminded (Vol. I. p. 404; II. p. 33) that the aim of the Platonic dialectic is to confuse and to resolve the finite ideas of men, in order to bring about in their consciousness what science demands, the consideration of that which is. By being thus directed against the form of the finite, dialectic has in the first place the effect of confounding the particular, and this is brought about by the negation therein present being shown forth, so that, in fact, it is proved that it is not what it is, but that it passes into its opposite, into the limitations which are essential to it. But if this dialectic is laid hold of, the particular passes away and becomes another than that which it is taken to be. Formal philosophy cannot look at dialectic in any other way than as being the art of confusing ordinary conceptions or even Notions, and demonstrating their nullity, thus making their result to be merely negative. For this reason, Plato in his Republic (VII. pp. 538, 539, Steph.; pp. 370, 371, Bekk.) advised the citizens not to allow dialectic to be studied before the thirtieth year, because by its means anyone might transform the beautiful, as he had received it from his masters, into that which is hateful. We find this dialectic a great deal in Plato, both in the more Socratic and moralizing dialogues, and in the many dialogues which relate to the conceptions of the Sophists in regard to science.