Image Source: Firefly.
This evening I watched the stars in a yard full of fireflies. The sky winked down at Earth and the darkened countryside winked back at the sky. I started thinking what it must have been like before Christianity, when people believed old religions and animism. Although it's pretty evident that a lightning bug is a lightning bug, I could imagine how pre-Christians could have invented fairies in these hushed, night landscapes, as the heat of the day dispersed into evening mists. There's an interesting blog post on fireflies' bioluminescence as a metaphor for the brevity of existence here.