Men who arrive anywhere in any direction always have the habit of ignoring the nonessential more or less strongly developed. One reason--perhaps the chief reason--why Norman had got up to the high places of material success at so early an age was that he had an unerring instinct for the essential and wasted no time or energy upon the nonessential. In his present situation Dorothy's father, the abstracted man of science, was one of the factors that obviously fell into the nonessential class. Norman knew little about him, and cared less. Also, he took care to avoid knowing him. Knowing the father would open up possibilities of discomfort--But, being a wise young man, Norman gave this matter the least possible thought. Still, it was necessary that the two men see something of each other. Hallowell discovered nothing about Norman, not enough about his personal appearance to have recognized him in the street far enough away from the laboratory to dissociate the two ideas. Human beings--except his daughter--did not interest Hallowell; and his feeling for her was somewhat in the nature of an abstraction. Norman, on the other hand, was intensely interested in human beings; indeed, he was interested in little else. He was always thrusting through surfaces, probing into minds and souls. He sought thoroughly to understand the living machines he used in furthering his ambitions and desires. So it was not long before he learned much about old Newton Hallowell--and began to admire him--and with a man of Norman's temperament to admire is to like. He had assumed at the outset that the scientist was more or less the crank. He had not talked with him many times before he discovered that, far from being in any respect a crank, he was a most able and well-balanced mentality--a genius. The day came when, Dorothy not having returned from a shopping tour, he lingered in the laboratory talking with the father, or, rather, listening while the man of great ideas unfolded to him conceptions of the world that set his imagination to soaring.