Cultural morals in my opinion are not true morals
Then what are true morals? The morals both you and cturtle have given me are based on religion, a piece of culture.
And speaking of Christ...
Not everyone believes in his teachings or his messianic qualities. In addition, not everybody interprets his teachings the same way, as evidenced by the huge number of Christian faiths. So not even concrete teachings by Christ are necessarily indicative of a universal moral standard. He lived by a Jewish moral standard, and put his own teachings along with his religion.
Christ cannot possibly answer the morality question because he still doesn't provide a standard that is, or ever can be measured objectively.
DumbTeen, you say that "the only true moral act (which can also be cultural at the same time) is any unselfish act." So serving yourself is inherantly immoral and doing something outside yourself is inherantly moral? If I kill someone as a service to someone else (unselfishly), did I just commit a moral act? Furthermore, if by serving myself first I can actually enhance my ability to help others, am I truly being immoral in helping myself. For instance, by working for a charity, I could benefit myself because I would be satisfied with the knowledge I helped someone while possibly recieving compensation. I'm still in it for self-interest, but aren't my actions still moral?