@chaser
Right. Imagine that you were born in a forest with 2 parents, and that the only people you've met or spoken with were your parents. You would learn your ethics through them because they are your only reference points. In a larger community, your ethics are shaped by family and society...
@chaser
I apologize for the long response, though I would like to explain in depth.
Interestingly enough, teacher puts it best with "You might think Ethics is optional in life, but in reality, its compulsory." You already absorb what good and bad are through your developing years. Hurting...