I am certainly very impressed and touched by every second of Grain. Tremendous attribution to all very good human examples from Prophet Moses to Porphet Muhammed (sav) also great thinkers like Yunus,and numerous others whom tried to understand and reminded us human journey's limitations & efficient use need. Andrei is obviously Andrei Tarkovsky in some point their road seperated because their search needs were different.
Breath or Grain you may read this as spirit or material. Both are not different as western world scholars thought us. There is no borders between them and they grow together.
Everything in the film is happening right now. We are all witnessing to Middle East, Latin America, some Asian countries divisions and how their resources stolen by some countries. They are not right but at the moment they have the power. But with this power also they are destroying themselves.
Semih Kaplanoglu gave an examle during one of his interviews; "While people are starving in Sudan, there are grains grown to sell to Europe in fertile soil covered with electric tails one or two steps away." The film goes out of the way of the world's question, how we can cure the present disorder. Disorders; desire for constant and continuous growth. We can compare the problem to cancer,which wants to grow up without stopping; Until it is impossible to grow constantly with limited resources, people break down the habitat they live on, and eventually environmental disasters and hunger that have not been seen throughout history have become prominent.
If you do not know much about this part of the world, its heritage and culture it will be difficult to understand but watch this film and then you can read about more to understand it. You will surely enjoy more in time by widening your harizon.