" The simple fact is that we live in a world of conflict and opposites because we live in a world of boundaries. Since every boundary line is also a battle line, here is the human predicament: the firmer one’s boundaries, the more entrenched are one’s battles. The more I hold onto pleasure, the more I necessarily fear pain. The more I pursue goodness, the more I am obsessed with evil. The more I seek success, the more I must dread failure. The harder I cling to life, the more terrifying death becomes. The more I value anything, the more obsessed I become with its loss. Most of our problems, in other words, are problems of boundaries
and the opposites they create. "

― Ken Wilber , No Boundary: Eastern and Western Approaches to Personal Growth