And these means must be employed in order to attain to the knowledge of the real truth.
This pretext is then, in the case of the Greeks, futile; for those who are willing may find the truth. But in the case of those who adduce unreasonable excuses, their condemnation is unanswerable. For whether do they deny or admit that there is such a thing as demonstration? I am of opinion that all will make the admission, except those who take away the senses. There being demonstration, then, it is necessary to condescend to questions, and to ascertain by way of demonstration by the Scriptures themselves how the heresies erred, and how in the truth alone and in the ancient church is both the exactest knowledge, and the truly best set of principles (αἵρεσις).
Now, of those who diverge from the truth, some attempt to deceive themselves alone, and some also their neighbours. Those, then, who are called (δοξόσοφοι) wise in their own opinions, who think that they have found the truth, but have no true demonstration, deceive themselves in thinking that they have reached a resting-place. And of whom there is no inconsiderable multitude, who avoid investigations for fear of refutations, and shun instruction for fear of condemnation. But those who deceive those who seek access to them are very astute; who, aware that they know nothing, yet darken the truth with plausible arguments.
But, in my opinion, the nature of plausible arguments is of one character, and that of true arguments of another. And we know that it is necessary that the appellation of the heresies should be expressed in contradistinction to the truth; from which the Sophists, drawing certain things for the destruction of men, and burying them in human arts invented by themselves, glory rather in being at the head of a School than presiding over the Church.
