Their battle had come to the point where I cannot refrain from speaking up. And I mourn for this, for they were the two sons of one man. One could say that 'they' were fighting in this way if one wished to speak of two. These two , however, were one, for 'my brother and I' is one body, like good man and good wife. Contending here from loyalty of heart, one flesh, one blood, was doing itself much harm.
This has strong echoes of the constant twinning in Suttree, the battle raging within him, most prominently portrayed in the guise of the stillborn brother.