Many are confusing that it doesn't matter what we find to be right or wrong (murder, stealing, etc.). People differ, because there is an exact truth to be known and not everyone knows it.
But every person who has ever lived would, at the right moment, experience and have to admit to feeling righted or wronged.
Everyone may not feel that way about stealing, but they might about murder, or lying, etc. So, morals are there (basically everyone has admitted to that). Where did they originate?
I guess some really cool monkey, who taught his monkey bros.