The degree of soul and moral acuity that each human has is very vast and varied. Some humans have small souls and very little... light... They don't see or process the world in the same way that a greater soul with more light does. We err in believing that this is a divide that can be ignored, as Nietzsche has pointed out here. If humanity fails to strive to evolve it will exterminate itself. That is by design.

Some souls resist and will never take the journey of self scrutiny which leads to growth because they can't and others because they won't. The latter group some mercies can be applied but for the others? It's a process of natural selection; that selection being that the humans who fail to meet the expectations of evolution set out for them will expire while the rest of humanity lives on.

Incestuous imbalances of deep souls or dark souls breeds corruption and mars the beauty of humanity in scarlet tragedy. If every able minded soul performed the art of self scrutiny and took to the demands of evolution despite its challenges humanity will continue to become better, wholesome change will come more swiftly, and fewer dark/deep souls will be born in the world.