But until he does that--until he gives a better or more plausible reason than he has offered against the evidence in the case--I suggest to him it will not avail him at all that he swells himself up, takes on dignity, and calls people liars. Why, sir, there is not a word in Trumbull's speech that depends on Trumbull's veracity at all. He has only arrayed the evidence and told you what follows as a matter of reasoning. There is not a statement in the whole speech that depends on Trumbull's word. If you have ever studied geometry, you remember that by a course of reasoning Euclid proves that all the angles in a triangle are equal to two right angles. Euclid has shown you how to work it out. Now, if you undertake to disprove that proposition, and to show that it is erroneous, would you prove it to be false by calling Euclid a liar? They tell me that my time is out, and therefore I close. FIFTH JOINT DEBATE, AT GALESBURGH, OCTOBER 7, 1858 Mr. LINCOLN'S REPLY. MY FELLOW-CITIZENS: A very large portion of the speech which Judge Douglas has addressed to you has previously been delivered and put in print. I do not mean that for a hit upon the Judge at all.---If I had not been interrupted, I was going to say that such an answer as I was able to make to a very large portion of it had already been more than once made and published. There has been an opportunity afforded to the public to see our respective views upon the topics discussed in a large portion of the speech which he has just delivered. I make these remarks for the purpose of excusing myself for not passing over the entire ground that the Judge has traversed. I however desire to take up some of the points that he has attended to, and ask your attention to them, and I shall follow him backwards upon some notes which I have taken, reversing the order, by beginning where he concluded.