What is the nature of morality?
Plato believed in an objective "good" and fought Sophists who argued that the idea of good is necessarily derived from an agenda and doesn't exist per se.
I can't reason myself to disagree with the Sophists...
If you believe in the supernatural, you most likely follow Plato on this one. But if not, how do you rationnally defend the concept of "good' as being part of the objective reality?