But that beautiful dream is past and I must set to work, almost glad that now my work has a direct connection with the Castle Keep, for that wings it. Certainly, as I can see more and more clearly, I need all my energies for this task, which at first seemed quite a trifling one. I listen now at the walls of the Castle Keep, and wherever I listen, high or low, at the roof or the floor, at the entrance or in the corners, everywhere, everywhere, I hear the same noise. And how much time, how much care must be wasted in listening to that noise, with its regular pauses. One can, if one wishes, find a tiny deceitful comfort in the fact that here in the Castle Keep, because of its vastness, one hears nothing at all, as distinguished from the passages, when one stands back from the walls. Simply as a rest and a means to regain my composure I often make this experiment, listen intently and am overjoyed when I hear nothing. But the question still remains, what can have happened? Confronted with this phenomenon my original explanation completely falls to the ground. But I must also reject other explanations which present themselves to me. One could assume, for instance, that the noise I hear is simply that of the small fry themselves at their work. But all my experience contradicts this; I cannot suddenly begin to hear now a thing that I have never heard before though it was always there. My sensitiveness to disturbances in the burrow has perhaps become greater with the years, yet my hearing has by no means grown keener. It is of the very nature of small fry not to be heard. Would I have tolerated them otherwise? Even at the risk of starvation I would have exterminated them. But perhaps — this idea now insinuates itself — I am concerned here with some animal unknown to me. That is possible. True, I have observed the life down here long and carefully enough, but the world is full of diversity and is never wanting in painful surprises. Yet it cannot be a single animal, it must be a whole swarm that has suddenly fallen upon my domain, a huge swarm of little creatures, which, as they are audible, must certainly be bigger than the small fry, but yet cannot be very much bigger, for the sound of their labors is itself very faint. It may be, then, a swarm of unknown creatures on their wanderings, who happen to be passing by my way, who disturb me, but will presently cease to do so. So I could really wait for them to pass, and need not put myself to the trouble of work that will be needless in the end. Yet if these creatures are strangers, why is it that I never see any of them? I have already dug a host of trenches, hoping to catch one of them, but I can find not a single one. Then it occurs to me that they may be quite tiny creatures, far tinier than any I am acquainted with, and that it is only the noise they make that is greater. Accordingly I investigate the soil I have dug up, I cast the lumps into the air so that they break into quite small particles, but the noisemakers are not among them. Slowly I come to realize that by digging such small fortuitous trenches I achieve nothing; in doing that I merely disfigure the walls of my burrow, scratching hastily here and there without taking time to fill up the holes again; at many places already there are heaps of earth which block my way and my view. Still, that is only a secondary worry; for now I can neither wander about my house, nor review it, nor rest; often already I have fallen asleep at my work in some hole or other, with one paw clutching the soil above me, from which in a semistupor I have been trying to tear a lump. I intend now to alter my methods. I shall dig a wide and carefully constructed trench in the direction of the noise and not cease from digging until, independent of all theories, I find the real cause of the noise. Then I shall eradicate it, if that is within my power, and if it is not, at least I shall know the truth. That truth will bring me either peace or despair, but whether the one or the other, it will be beyond doubt or question. This decision strengthens me. All that I have done till now seems to me far too hasty; in the excitement of my return, while I had not yet shaken myself free from the cares of the upper world, and was not yet completely penetrated by the peace of the burrow, but rather hypersensitive at having had to renounce it for such a long time, I was thrown into complete confusion of mind by an unfamiliar noise. And what was it? A faint whistling, audible only at long intervals, a mere nothing to which I don't say that one could actually get used, for no one could get used to it, but which one could, without actually doing anything about it at once, observe for a while; that is, listen every few hours, let us say, and patiently register the results, instead of, as I had done, keeping one's ear fixed to the wall and at every hint of noise tearing out a lump of earth, not really hoping to find anything, but simply so as to do something to give expression to one's inward agitation. All that will be changed now, I hope. And then, with furious shut eyes, I have to admit to myself that I hope nothing of the kind, for I am still trembling with agitation just as I was hours ago, and if my reason did not restrain me I would probably like nothing better than to start stubbornly and defiantly digging, simply for the sake of digging, at some place or other, whether I heard anything there or not; almost like the small fry, who burrow either without any object at all or simply because they eat the soil. My new and reasonable plan both tempts me and leaves me cold. There is nothing in it to object to, I at least know of no objection; it is bound, so far as I can see, to achieve my aim. And yet at bottom I do not believe in it; I believe in it so little that I do not even fear the terrors which its success may well bring, I do not believe even in a dreadful denouement; indeed it seems to me that I have been thinking ever since the first appearance of the noise of such a methodical trench, and have not begun upon it until now simply because I put no trust in it. In spite of that I shall of course start on the trench; I have no other alternative; but I shall not start at once, I shall postpone the task for a little while. If reason is to be reinstated on the throne, it must be completely reinstated; I shall not rush blindly into my task. In any case I shall first repair the damage that I have done to the burrow with my wild digging; that will take a good long time, but it is necessary; if the new trench is really to reach its goal it will probably be long, and if it should lead to nothing at all it will be endless; in any case this task means a longish absence from the burrow, though an absence by no means so painful as an absence in the upper world, for I can interrupt my work whenever I like and pay a visit to my house; and even if I should not do that the air of Castle Keep will be wafted to me and surround me while I work; nevertheless it means leaving the burrow and surrendering myself to an uncertain fate, and consequently I want to leave the burrow in good order behind me; it shall not be said that I, who am fighting for its peace, have myself destroyed that peace without reinstating it at once. So I begin by shoveling the soil back into the holes from which it was taken, a kind of work I am familiar with, that I have done countless times almost without regarding it as work, and at which, particularly as regards the final pressing and smoothing down — and this is no empty boast, but the simple truth — I am unbeatable. But this time everything seems difficult, I am too distracted, every now and then, in the middle of my work, I press my ear to the wall and listen, and without taking any notice let the soil that I have just lifted trickle back into the passage again. The final embellishments, which demand a stricter attention, I can hardly achieve at all. Hideous protuberances, disturbing cracks remain, not to speak of the fact that the old buoyancy simply cannot be restored again to a wall patched up in such a way. I try to comfort myself with the reflection that my present work is only temporary. When I return after peace has been restored I shall repair everything properly: work will be mere play to me then. Oh yes, work is mere play in fairy tales, and this comfort of mine belongs to the realm of fairy tales too. It would be far better to do the work thoroughly now, at once, far more reasonable than perpetually to interrupt it and wander off through the passages to discover new sources of noise, which is easy enough, all that is needed being to stop at any point one likes and listen. And that is not the end of my useless discoveries. Sometimes I fancy that the noise has stopped, for it makes long pauses; sometimes such a faint whistling escapes one, one's own blood is pounding all too loudly in one's ears; then two pauses come one after another, and for a while one thinks that the whistling has stopped forever. I listen no longer, I jump up, all life is transfigured; it is as if the fountains from which flows the silence of the burrow were unsealed. I refrain from verifying my discovery at once, I want first to find someone to whom in all good faith I can confide it, so I rush to the Castle Keep, I remember, for I and everything in me has awakened to new life, that I have eaten nothing for a long time, I snatch something or other from among my store of food half-buried under the debris and hurriedly begin to swallow it while I hurry back to the place where I made my incredible discovery, I only want to assure myself about it incidentally, perfunctorily, while I am eating; I listen, but the most perfunctory listening shows at once that I was shamefully deceived: away there in the distance the whistling still remains unshaken. And I spit out my food, and would like to trample it underfoot, and go back to my task, not caring which I take up; anyplace where it seems to be needed, and there are enough places like that, I mechanically start on something or other, just as if the overseer had appeared and I must make a pretense of working for his benefit. But hardly have I begun to work in this fashion when it may happen that I make a new discovery. The noise seems to have become louder, not much louder, of course — here it is always a matter of the subtlest shades — but all the same sufficiently louder for the ear to recognize it clearly. And this growing-louder is like a coming-nearer; still more distinctly than you hear the increasing loudness of the noise, you can literally see the step that brings it closer to you. You leap back from the wall, you try to grasp at once all the possible consequences that this discovery will bring with it. You feel as if you had never really organized the burrow for defense against attack; you had intended to do so, but despite all your experience of life the danger of an attack, and consequently the need to organize the place for defense, seemed remote — or rather not remote (how could it possibly be!) — but infinitely less important than the need to put it in a state where one could live peacefully; and so that consideration was given priority in everything relating to the burrow. Many things in this direction might have been done without affecting the plan of the whole; most incomprehensibly they have been neglected. I hav