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. The house as well as the family was of some antiquity, but no description of it is necessary to the understanding of my narrative. It contained a fine library, whose growth began before the invention of printing, and had continued to my own time, greatly influenced, of course, by changes of taste and pursuit. Nothing surely can more impress upon a man the transitory nature of possession than his succeeding to an ancient property! Like a moving panorama mine has passed from before many eyes, and is now slowly flitting from before my own. The library, although duly considered in many alterations of the house and additions to it, had nevertheless, like an encroaching state, absorbed one room after another until it occupied the greater part of the ground floor. Its chief room was large, and the walls of it were covered with books almost to the ceiling; the rooms into which it overflowed were of various sizes and shapes, and communicated in modes as various--by doors, by open arches, by short passages, by steps up and steps down. In the great room I mainly spent my time, reading books of science, old as well as new; for the history of the human mind in relation to supposed knowledge was what most of all interested me. Ptolemy, Dante, the two Bacons, and Boyle were even more to me than Darwin or Maxwell, as so much nearer the vanished van breaking into the dark of ignorance.