Father and Son

Looking at the topic “Father and Son,” I was instantly sparked to write about family relations; so I thought of writing about daughter and father since it’s something could I relate to more (being that I am a daddy’s girl). But rather, The Road won't allow this type of drift from the main theme, being that the perspective in the novel is too narrow to still someway connect it to other subjects and be able to support my point with the book: therefore I write only of “Father and Son”.
To me a father and son are like yin and yang…or should I say play into yin yang. They only complete one side, where the child is the bigger portion, and the father the smaller. The other side would probably be the mother/mother figure; and I don’t believe the region (lighter or darker) of the circle they inhabit matters as long as it is complete. And although they only make up half, without each other they would be lost or insignificant. The situation I am about to examine only looks upon two possibilities, so I don’t deny other menial details could change the scenario.
Say they were the yin half, (the dark half with the white dot in the middle…and again the father being that dot). The boy without that light/guidance his father gives in the book, would be engulfed in darkness to the point of death. This also works vice-versa for the father. I don’t know if you have seen the Avatar Airbender episode where yin is taken from the pond, and only yang is left. Yang becomes overdrawn & outraged with the evil that surrounds it (because it is pure) …possesses Ang… and is taken to the point of destruction. The father without the boy, no matter how big of a threat carrying a child along in this apocalyptic world is to his life, wouldn’t survive without him.
Now say they were the yang half, (the boy is always the bigger portion, so the father is the dark circle). The same concept applies here. The boy is the fathers guiding light from death, and the father is the boys way of survival. And although the other half of the symbol is still at lost in this, being half way whole is better than being at chaos as the rest of the world.