By such a use of language any premises may be made to lead to any conclusion. I am not one of those who believe Plato to have been a mystic or to have had hidden meanings; nor do I agree with Dr. Jackson in thinking that 'when he is precise and dogmatic, he generally contrives to introduce an element of obscurity into the expostion' (J. of Philol.). The great master of language wrote as clearly as he could in an age when the minds of men were clouded by controversy, and philosophical terms had not yet acquired a fixed meaning. I have just said that Plato is to be interpreted by his context; and I do not deny that in some passages, especially in the Republic and Laws, the context is at a greater distance than would be allowable in a modern writer. But we are not therefore justified in connecting passages from different parts of his writings, or even from the same work, which he has not himself joined. We cannot argue from the Parmenides to the Philebus, or from either to the Sophist, or assume that the Parmenides, the Philebus, and the Timaeus were 'written simultaneously,' or 'were intended to be studied in the order in which they are here named (J. of Philol.) We have no right to connect statements which are only accidentally similar. Nor is it safe for the author of a theory about ancient philosophy to argue from what will happen if his statements are rejected. For those consequences may never have entered into the mind of the ancient writer himself; and they are very likely to be modern consequences which would not have been understood by him. 'I cannot think,' says Dr. Jackson, 'that Plato would have changed his opinions, but have nowhere explained the nature of the change.' But is it not much more improbable that he should have changed his opinions, and not stated in an unmistakable manner that the most essential principle of his philosophy had been reversed? It is true that a few of the dialogues, such as the Republic and the Timaeus, or the Theaetetus and the Sophist, or the Meno and the Apology, contain allusions to one another. But these allusions are superficial and, except in the case of the Republic and the Laws, have no philosophical importance. They do not affect the substance of the work.
It may be remarked further that several of the dialogues, such as the Phaedrus, the Sophist, and the Parmenides, have more than one subject. But it does not therefore follow that Plato intended one dialogue to succeed another, or that he begins anew in one dialogue a subject which he has left unfinished in another, or that even in the same dialogue he always intended the two parts to be connected with each other. We cannot argue from a casual statement found in the Parmenides to other statements which occur in the Philebus. Much more truly is his own manner described by himself when he says that 'words are more plastic than wax' (Rep.), and 'whither the wind blows, the argument follows'. The dialogues of Plato are like poems, isolated and separate works, except where they are indicated by the author himself to have an intentional sequence.
