Rudolf Steiner: "Eventually all human evil springs from what we call selfishness. From the smallest human faults to the most immense crimes, when considering what we can designate as human imperfection and human wickedness, whether it seemingly originates from the soul or more from out of the bodily nature, the common basic characterization will be egotism. We find the actual meaning of evil in concurrence with human selfishness; and all striving to rise above imperfections and evil can be seen as commitment to fight against what we call selfishness. There has been much contemplation on this or that ethical principle, about these or other moral foundations; exactly this diving deeper into ethical principles and into moral foundations shows that selfishness is the common basis of all human evil. And so one can say: man works himself out of evil here in the physical world, inasmuch as he overcomes egotism."
Source: https://rudolfsteinerquotes.wordpress.com/2018/06/19/human-evil-egotism/