Negative Brief - Morality

Value: Morality

Who decides what is moral?
Does eveyone agree on what is moral?
Can you count how many different moral standards are being used in the world right now?
You said that morality comes from God, correct?
Is there more than one 'God' being claimed today?
Does everyone beleive in the same God?
Does everyone define morality the same way? (see quote)

On Spetember Eleventh, two men crashed airliners into the world trade center. They did so because they believed what they were doing was right and in accordance with their belief system. They obviously thought what they were doing was right, even though we know it wasn't. However, because their moral standard was different from ours, they had no trouble destroying a famous landmark and killing many people.

"I know only that what is moral is what you feel good after and what is immoral is what you feel bad after.”
-Ernest Hemmingway

Ernest clearly believes that whatever feels okay, is okay. Does this have any truth whatsoever?