Human nature is a complicated puzzle. If the Bible is true, then a decision made, who knows when, set the cast. Now through God can we be only changed. If evolution is true along Darwinian lines, then we still have a ways to go before we are "better natured" and love and cooperate with all our fellows. As to whether "hate" and its friend's are learned or not, I am not sure anybody knows. What is for sure is that laws and rules are established to reign in our hateful and evil tendicies to a minimum. Nice liitle history on slavery. Thanks