That statement popped out at me too. Again, always, moral relativism. There's a guy I work with that believes that there is no absolute right or wrong. Right and wrong is dictated by what the majority of the people say is right or wrong. I've had a few discussions with him about it and have decided that because he (and I will go ahead and assume all like-minded liberal thinkers) doesn't believe in God that he can never be convinced there is an absolute right or wrong. If he doesn't believe in a God that never changes, he can't believe in a right and wrong that never changes.
But then again, as Rush says, "History began this morning for these people."
Herbert Spencer: From The Proper Sphere Of Government:
I asked one of the members of Parliament whether a majority of the House could legitimize murder. He said, No. I asked him if it could sanctify robbery. He thought not. But I could not make him see that, if these things be always wrong, and not to be made right by the decisions of statesmen, then similarly all things must be always right or always wrong, apart from the authority of the law; and if the right and wrong of the law is not in harmony with this intrinsic right and wrong, the law itself is criminal.
A little ammo for your next encounter.
Ask him how he feels about slavery, or the KKK, or seal-clubbing, or Nazis. Most liberals are hypocrites about the "moral relativism" thing.