Excerpt from Chapter 1: "I had made little acquaintance with the history of my ancestors. Almost the only thing I knew concerning them was, that a notable number of them had been given to study. I had myself so far inherited the tendency as to devote a good deal of my time, though, I confess, after a somewhat desultory fashion, to the physical sciences. It was chiefly the wonder they woke that drew me. I was constantly seeing, and on the outlook to see, strange analogies, not only between the facts of different sciences of the same order, or between physical and metaphysical facts, but between physical hypotheses and suggestions glimmering out of the metaphysical dreams into which I was in the habit of falling. I was at the same time much given to a premature indulgence of the impulse to turn hypothesis into theory. Of my mental peculiarities there is no occasion to say more."