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.