““When we say that this definition of good and evil is objective, what we mean is that it is as objective as we can be at this time, and to the best of our knowledge about the universe. This definition is based on what we know about how the universe works. It is not based on the revealed wisdom of any one faith or political movement. It is common to the best principles of all of them, but it is based on what we know rather than what we believe. In that sense, it is objective. Of course, what we know about the universe, and our place in it, is constantly changing as we add more information and gain new insights. We are never perfectly objective about anything, that is true, but we can be less objective, or we can be more objective.””
