You go to a different country with different teachings an all people believe feel and act differently. Thats proof that the statement is true. Our ancestors all owned slaves abused women etc. and we do none of those things but have our own evils. Most people are not smart enough to be their own person. And someone who is their own person is tortured by the knowledge of your moralities. You should start thinking for yourself and ease the suffering that you unknowingly or uncaringly cause.