discourse concerning the truth is one thing, and to discourse in defence of it is another, has been sufficiently explained in the remarks already made, as also in what respects they differ from each other, and when and in dealing with whom they are severally useful; but perhaps there is no reason why, with a view to the general certainty, and because of the connection of what has been said with what remains, we should not make a fresh beginning from these same points and those which are allied to them. To the one kind of argument it naturally pertains to hold the foremost place, to the other to attend upon the first, and clear the way, and to remove whatever is obstructive or hostile. The discourse concerning the truth, as being necessary to all men for certainty and safety, holds the first place, whether in nature, or order, or usefulness: in nature, as furnishing the knowledge of the subject; in order, as being in those things and along with those things which it informs us of; in usefulness, as being a guarantee of certainty and safety to those who become acquainted with it. The discourse in defence of the truth is inferior in nature and force, for the refutation of falsehood is less important than the establishment of truth; and second in order, for it employs its strength against those who hold false opinions, and false opinions are an aftergrowth from another sowing and from degeneration. But, notwithstanding all this, it is often placed first, and sometimes is found more useful, because it removes and clears away beforehand the disbelief which disquiets some minds, and the doubt or false opinion of such as have but recently come over. And yet each of them is referrible to the same end, for the refutation of falsehood and the establishment of truth both have piety for their object: not, indeed, that they are absolutely one and the same, but the one is necessary, as I have said, to all who believe, and to those who are concerned about the truth and their own salvation; but the other proves to be more useful on some occasions, and to some persons, and in dealing with some. Thus much by way of recapitulation, to recall what has been already said. We must now pass on to what we proposed, and show the truth of the doctrine con-
