Said this, the problem that had was that more importance to the argument of what was given of the veracity of what was spoken. Thus, the good orator left the quarrel with the detainer of the truth of the treated question. As Vernant cites: When bringing ' mistrio' for the public square, into full now, it converts it in an object of public and contradictory debate, in which the argument dialectic finishes for surpassing the supernatural illumination (VERNANT, J.P. 1973. p.302). In these terms, Vernant indicates that, many times, the truth was left of side, attempting against itself only to the fact of the argument, of the rhetoric, as they made sofistas, that simply had the function of persuation of determined person. Thus, we can understand the famous phrase of Scrates ' ' I know that nothing Sei' ' , through the oracle of Dlfus, representing exactly the critical one of that, arriving themselves at the truth, she is necessary if to raise to a state of so high spirit that, if to leave to lead for the directions, its search if becomes each more arduous time.
Thus, Scrates, as the too much philosophers, always searched the truth. But truth in all the directions of the term, that enclosed a bigger ideal. However, as it describes Plato in the Myth of the Cave, located in the book ' ' The Repblica' ' , in a dialogue of Scrates and Gluco, the human beings do not know the real truth, a time that are imprisoned by chains in a cave, looking at for the wall, and seeing only shades, in opposition to an opening behind them, where it has a fogueira, that is, the true object of which they only saw shades. In this manner, it is to have of one of them if to free of chains, to look at true object, and to spread the real truth for all the others, a time that the truth must be said and be shared with excessively.