There was a raindrop at the library, it fell from a wire that supports the red, amber, green lights and the left-turn yield on green sign above that crosswalk, and it was the start of the many circular waves on the surface of a puddle. Most like, I guess, the moisture that condenses on the insides of the windows and creates wet drops near the windowsill or the floor. When I reached the lilac bush there were raindrops dangling from the narrow twig branches. The lilac bush has been a purple lilac bush each spring that I have walked along this sidewalk.