The report had fallen rustling to the ground, and Philip sat there staring in front of him, with his elbows on the table and eyes fixed intently on nothing. Every now and then some clerk came in with a paper for his signature, or a letter for his consideration; every now and then he was rung up on the telephone that stood by his elbow. But he had that rarest of gifts, a mind that can detach itself from one thing and attach itself in its entirety to another, and he gave his whole attention to these interruptions when they occurred, and transferred it all back to the problem he was digging at when he had dealt with them. The way he pursued was narrow and winding, but step by step he traced it out. It took him not less than an hour of hard thinking to make up his mind definitely on the point: there were so many things to consider, for, as he always held, there was hardly an event that took place in the world which did not have its definite and certain effect on the money-market; and the sole and only office of the financier was to be able, on the basis of what had happened before, to conjecture what was going to happen now (for things followed an invariable rule), and estimate what the effect of his conjectured events would be. And nothing in the world was more engrossing than that; there was no bit of knowledge a man might possess concerning human nature, however fragmentary and hard to fit in, that did not have its place in the puzzle he had to put together. Above all, Philip did not believe in chance in these affairs; it might, indeed, be chance whether he himself correctly estimated how future events would shape themselves, but the element of luck here was only, if one ran it to the ground, his own ignorance; for if his knowledge of the past could be complete, so also would his knowledge of the future be, for in the City of all places is it most true that the future is only the past entered through another door.