
What Act 4 accomplishes is a convolution of plot and character list to the point of ridiculousness. Already in the play, we have been shown the souls of common everyday objects and elements; cat, dog, bread, sugar, milk, water, fire, and light. These eight characters accompany two children Tyltyl and Mytyl along their journey. Later the two children are introduced to the souls of other animals, trees, and even Night. In Act 4 however, there is a virtual orgy of souls. It's bad enough that we get such an abstract character as "The Luxury", but then we have The Luxury of Being Rich, The Luxury of Satisfied Vanity, The Luxury of Sleeping More Than Is Necessary, The Happiness of Being Well, the Happiness of Running In The Dew, The Joy of Seeing What Is Beautiful, The Joy of Maternal Love, The Joy of Understanding, and so on and so on. Very quickly it loses its charm. Yes, I'll admit some, like the "Luxury of Sleeping More Than Is Necessary" made me smile initially. But after a while the personification of every idea imaginable got tedious. Furthermore, the insanely obvious attempts at an allegory was grating.
At the end, I did find myself pondering what the Blue Bird itself was supposed to represent. Most have hypothesized that it is the key to happiness or something to that effect, but they fall short of saying just what that key is. To me, there are a lot of signs that point to it being "appreciation". The plot of the play has two children searching for a blue bird to give to a fairy's daughter. At the end, we see that their pet bird was the Blue Bird all along. If that seems like an obvious oversight on the part of the children, they did consider it at the beginning. However, the fairy, who appears just as the children enviously watch other children who are feasting and getting Christmas presents, says it isn't blue enough. After a long and tiresome journey, they realize that their pet bird seems "bluer" than before and they give it to the girl. But there are a couple of problems with my theory. First of all, I can see no reason why Maeterlinck would not just personify appreciation as well. Also, I'm not sure why the animals, trees and other souls would be so threatened by the Blue Bird falling into the hands of the children. Oh well, if it wasn't for the terrible fourth act, maybe I'd spend more time contemplating it.