_X_. No, Phædrus, I beg your pardon. It is very true I did not attempt to prove that your head might not remain stationary; I could not have proved this _directly_, without anticipating a doctrine out of its place; but I proved it _indirectly_, by showing that, if it were supposed possible, an absurdity would follow from that supposition. I said, and I say again, that the doctrine of wages will show the very supposition itself to be absurd; but, until we come to that doctrine, I content myself with proving that, let that supposition seem otherwise ever so reasonable (the supposition, namely, that profits may be stationary whilst wages are advancing), yet it draws after it one absurd consequence, namely, that a thing may be bigger than that to which it is confessedly equal. Look back to the notes of our conversation, and you will see that this is as I say. You say, Philebus, that I prove profits in a particular case to be incapable of remaining stationary, by assuming that price cannot increase; or, if I am called upon to prove that assumption--namely, that price cannot increase--I do it only by assuming that profits in that case are incapable of remaining stationary. But, if I had reasoned thus, I should not only have been guilty of a _petitio principii_ (as you alleged), but also of a circle. Here, then, I utterly disclaim and renounce either assumption: I do not ask you to grant me that price must continue stationary in the case supposed; I do not ask you to grant me that profits must recede in the case supposed. On the contrary, I will not have them granted to me; I insist on your refusing both of these principles. _Phil_. Well, I _do_ refuse them. _Phæd_. So do I. I'll do anything in reason as well as another. "If one knight give a testril--" [Footnote: Sir Andrew Aguecheek, in "Twelfth Night."] _X_. Then let us suppose the mines from which we obtain our silver to be in England. _Phæd_. What for? Why am I to suppose this? I don't know but you have some trap in it. _X_. No; a Newcastle coal-mine, or a Cornwall tin-mine, will answer the purpose of my argument just as well. But it is more convenient to use silver as the illustration; and I suppose it to be in England simply to avoid intermixing any question about foreign trade. Now, when the hat sold for eighteen shillings, on Mr. Ricardo's principle why did it sell for that sum? _Phil_. I suppose, because the quantity of silver in that sum is assumed to be the product of four days' labor in a silver-mine. _X_. Certainly; because it is the product of the same quantity of labor as that which produced the hat. Calling twenty shillings, therefore, four ounces of silver, the hat was worth nine tenths of four ounces. Now, when wages advance from twelve shillings to fourteen shillings, profits (you allege) will not pay this advance, but price. On this supposition the price of the hat will now be--what? _Phil_. Twenty shillings; leaving, as before, six shillings for profit.