The notion that the shape of things could be altered by altering the angle of the frame while looking through the glass was an amazing discovery. I had a lot of fun with my new toy, through which I could make my teacher pull faces and look funny. At the time I had of course no idea of how, or why. Now I know that I had stumbled on the optical power of glass.
Interpreted transparency: Do you see what I see?
My fascination with glass started, at the age of eight, when I got my first pair of glasses. What a fantastic tool. Suddenly I was able to see clearly, and read!