Could I not have derived them from personal experience?
A base example such as "If I touch fire, it hurts me. It must hurt others too and I would not want to subject someone to the pain I felt."
( mike woz ere 7442200 & 7696970 getter, Thu 6 Oct 2011, 2:45, archived)

why wouldn't you want to subject others to pain?
why does what you want decide what ought to be?
where does morality come into it? I'll tell you what does come into it. Empathy and sympathy, or compassion if you will. This is natural, but there's no logic in it.
( Moon Girl Technologies horrendous beanbag, Thu 6 Oct 2011, 2:50, archived)