Themes of 'A Serious Man'
1. "Sometimes you have to help yourself"
It seems Larry telling Arthur this was a one of the major components of the film as well as it's message. it's ironic Larry tells Arthur this because he didn't really help himself throughout the movie. Yes, he went asked others for guidance, but never took it upon himself to change what was going on around him. The only thing he couldn't really change was the fact he was sick (which we find out at the end). The "I didn't do anything" philosophy will get you nowhere in life. Those are usually the words of a victim. If you are being mistreated, you should stand up for yourself and demand respect where it is due. No one will take you seriously if you don't. As a result, he was constantly being trampled on. This movie has several underlying themes but this is one that is more on the tangible side.
2. Prelude (Dybukka curse)
One theme that is not quite as tangible is introduced in the beginning scene where the Dybukka (or however you spell it) is stabbed and walks out the house. As far as I'm concerned, the wife was correct in saying he was a ghost and their family was cursed. On top of that, he apparently leaves no footprints in the snow.
(I doubt the Cohen brothers did this unintentionally) is it possible that these are the ancestors of Larry and the curse has carried over generations? Or is it just the Cohen brothers telling us that Dybukkas (ghosts) are real in the universe of the film? I also think Arthur might be tied up this curse (or Sy) for they both bring trouble into Larry's life. There was another thread that discussed Arthur being shot in the head as a representation of the Dybukka being casted off. This also might make sense considering Larry is soon after given his first share of luck (His boss telling him his tenure is secured). I'm sure I'm missing a few things but the Dybukka is definitely an aspect to this film.
3. Accept the mystery
Between Larry wondering why he is so misfortuned and the Dentist looking for an explanation of the inscribed teeth, the idea of not knowing the answer to everything is key to the film. Sh:t happens and sometimes we simply cannot find a reason behind it. One way to live a better life to is accept this. Now, this might be where things get a little fuzzy, but Shroaedingers cat (maybe misspelled) is undoubtedly relevant to this theme. I've looked into this concept and basically it illustrates the idea that sometimes we simply cannot know something until we observe it (dead/alive cat in box). Apparently this idea is not an example of quantum mechanics but more of a model of how nano particles act. At no point is the cat alive AND dead. We simply cannot say either because we haven't opened the box yet. I'm still not entirely sure on why the Cohen brothers put this in the film (feedback welcomed) but I sense it is simply to reiterate the "accept the mystery" concept.
I'll leave the rest of the themes up to you guys. I decided not to delve into the alleged quantum mechanic / duality theories that surround this film because I'm honestly not educated on that subject and have a hard time understanding it, although I do think the Cohens had it in mind. Anyways, great movie. Gotta love the Cohens and their philosophical ambiguity. Really gets thinking. 8/10