Jacob, who followed a new system of inquiry, and whose book displayed the results of deep research and extensive reading.  It did not, however, cause me to change my opinion.  Even had it been published before I had written my drama, I should still have adhered to the idea as to the most probable solution of the problem which I had arrived at in 1831, not only because it was incontestably the most dramatic, but also because it is supported by those moral presumptions which have such weight with us when considering a dark and doubtful question like the one before us.  It will, be objected, perhaps, that dramatic writers, in their love of the marvellous and the pathetic, neglect logic and strain after effect, their aim being to obtain the applause of the gallery rather than the approbation of the learned.  But to this it may be replied that the learned on their part sacrifice a great deal to their love of dates, more or less exact; to their desire to elucidate some point which had hitherto been considered obscure, and which their explanations do not always clear up; to the temptation to display their proficiency in the ingenious art of manipulating facts and figures culled from a dozen musty volumes into one consistent whole.

Our interest in this strange case of imprisonment arises, not alone from its completeness and duration, but also from our uncertainty as to the motives from which it was inflicted.  Where erudition alone cannot suffice; where bookworm after bookworm, disdaining the conjectures of his predecessors, comes forward with a new theory founded on some forgotten document he has hunted out, only to find himself in his turn pushed into oblivion by some follower in his track, we must turn for guidance to some other light than that of scholarship; especially if, on strict investigation, we find that not one learned solution rests on a sound basis of fact.

In the question before us, which, as we said before, is a double one, asking not only who was the Man in the Iron Mask, but why he was relentlessly subjected to this torture till the moment of his death, what we need in order to restrain our fancy is mathematical demonstration, and not philosophical induction.

While I do not go so far as to assert positively that Abbe Soulavie has once for all lifted the veil which hid the truth, I am yet persuaded that no other system of research is superior to his, and that no other suggested solution has so many presumptions in its favour.  I have not reached this firm conviction on account of the great and prolonged success of our drama, but because of the ease with which all the opinions adverse to those of the abbe may be annihilated by pitting them one against the other.