 All the complex toys of infancy I was wont to reduce to their elements; I turned them inside out to see what they were made of, and how they worked.  A doll, not my own, but my sister Bella's, which had moveable eyelids and a musical stomach, was treated by me in this manner, the result being that I learned little, while my poor sister suffered much.  Everything in my father's house suffered more or less from this inquiring tendency of my mind.