In what are usually regarded as the purely Socratic dialogues,[479] Plato evidently designs to exhibit this method of Socrates. They proceed continually on the firm conviction that there is a standard or criterion of truth in the reason of man, and that, by _reflection_, man can apprehend and recognize the truth. To awaken this power of reflection; to compel men to analyze their language and their thoughts; to lead them from the particular and the contingent, to the universal and the necessary; and to teach them to test their opinions by the inward standard of truth, was the aim of Socrates. These dialogues are a picture of the conversations of Socrates. They are literally an education of the thinking faculty. Their purpose is to discipline men to think for themselves, rather than to furnish opinions for them. In many of these dialogues Socrates affirms nothing. After producing many arguments, and examining a question on all sides, he leaves it undetermined. At the close of the dialogue he is as far from a declaration of opinions as at the commencement. His grand effort, like that of Bacon's, is to furnish men a correct method of inquiry, rather than to apply that method and give them results. [Footnote 479: "Laches," "Charmides," "Lysis," "The Rivals," "First and Second Alcibiades," "Theages," "Clitophon." See Whewell's translation, vol. i.] We must not, however, from thence conclude that Socrates did not himself attain any definite conclusions, or reach any specific and valuable results. When, in reply to his friends who reported the answer of the oracle of Delphi, that "Socrates was the wisest of men," he said, "he supposed the oracle declared him wise _because he knew nothing_," he did not mean that true knowledge was unattainable, for his whole life had been spent in efforts to attain it. He simply indicates the disposition of mind which is most befitting and most helpful to the seeker after truth. He must be conscious of his own ignorance. He must not exalt himself. He must not put his own conceits in the way of the thing he would know. He must have an open eye, a single purpose, an honest mind, to prepare him to receive light when it comes. And that there is light, that there is a source whence light comes, he avowed in every word and act.