The answer is: Wilder values the beauty and simplicity of daily life.
In the passage from "Our Town," by Thornton Wilder, the Stage Manager wishes to put a copy of "Our Town" with other famous books in a time machine. Therefore, future generations will be able to see how people experienced traditional ceremonies of simple lives during the early twentieth century: birth, marriage, parenthood and death.
"Like sparks from a blacksmith's window" refers to the sparks that happen when a blacksmith is working. The meaning depends on the context. The context should usually be something like anger, exploding anger, or it could be excitement...
I will defeat you yelled the man too