Evil is an existential ugliness, a celebration of ego, a rejection of compassion, a desire to cause suffering, a penchant for negativity and lies and darkness. It resides in the foundations of evolution long before the Earth existed. It's like a centipede under a rock vs. an eagle soaring in a blue sky. The Universe tells you all you need to know about Good and Evil. It's not mere Freudian psychology. It's more tangible. But yes, evil begets evil.