Glass is a thing in disguise, an actor, is not solid at all,...

Glass is a thing in disguise, an actor, is not solid at all, but a liquid?an old sheet of glass will not only take on a royal and purplish tinge but will reveal its true liquid nature by having grown fatter at the bottom and thinner at thetop, and? It isinvisible, solid, in short a joyous and paradoxical thing, asgood a material as any tobuild a life from.