28 R. From this truth, as I remember, that Truth cannot perish, we have concluded, that not only if the whole world should perish, but even if Truth itself should, it will still be true that both the world and Truth have perished. Now there is nothing true without truth: in no wise therefore does Truth perish. A. I acknowledge all this, and shall be greatly surprised if it turns out false. R. Let us then consider that other point. A. Allow me, I pray you, to reflect a little, lest I should soon come back in confusion. R. Will it therefore not be true that Truth has perished? If it will not be true, then Truth does not perish. If it were true, where, after the fall of Truth, will be the true, when now there is no truth? A. I have no further occasion for thought and consideration; proceed to something else. Assuredly we will take order, so far as we may, that learned and wise men may read these musings, and may correct our unadvisedness, if they shall find any: for as to myself, I do not believe that either now or hereafter I shall be able to discover what can be said against this.
Source: Soliloquies (New Advent)