[cmdli]

"Objective good" can only be determined through subjective opinion and belief. What is "good" is judged by us based on our own values, which can differ amongst people. While we may all trend towards similar values, there still can be significant differences amongst people. For example, some may value to live in a freer society while others may value a more restrictive yet more secure society.

[lo_zamoyski]

And where do these "values" come from?

Value is objective, as good is a matter of being the kind of thing a thing is. That a subject is making the determination doesn't mean it has no objective reality. The subjective is not a cause of value anymore than a telescope is the cause of the image of the moon. The telescope can distort the image, but it would be nonsensical to call it the cause.

To consign value to mere subjectivity only makes value more mysterious, not less, as all this does is assert it as a brute fact with no relation to reality. On the other hand, an objective basis grounds it in human nature.