Glaffin smiles at Cecily's showmanship, which far exceeded his own. He thought about adding something to her speech, but he highly doubted that these people cared much to hear about his qualifications. Still, there was one thing he felt the need to point out that Cecily missed, "And you can see that the light sheds no painful heat, burns no air, and will not go out when wetted. It's as safe to carry in your hand as a smooth stone." Of course, some times heat was a desirable property, but there were always uses for a light even in places where flames should not go.