I may be religious but I am aligned with the good atheists: as our guide, nothing surpasses the truth. Moral systems can be fully derived from a combination of empathy, observation of consequences (including statistics), and logic... Using these three, it'll take you all the way to "society needs to execute gays to stop them from spreading their mental and bodily diseases." If your goal is seeking the best outcomes for the vast majority of people, it results in a moral code that is very much like ALL long-standing religions, though each has their own little cultural flavor. The existence of God is a truth of indeterminable value. If you're honest, you must allow for this uncertainty, even if you're fully confident in your belief. However, defining the limits of moral behavior is not like this. Too many faggy Reddit atheists think that no God means they can do anything they want without consequence. Like they found out that their dad wasn't their real dad, and immediately started ignoring his good advice.