The deep guilt that lives in your mind, and the need to punish that guilt, is an intolerable burden that must find release.
Yet the ego cannot allow guilt to be totally healed, for its existence depends on it.
Its solution is to project guilt and the need to attack, to punish, onto the world, onto your brothers.
The inner tension is thus temporarily lessened and made tolerable, yet never is it completely healed.
Thereby is the belief in guilt and attack strengthened.