Makaveli
Homoioi
Tolstoy argued that a religion is the relationship a person has with God and other people, and therefore morality could not exist without religion. Ergo, since religion encompasses all of one's relations and interactions with other people, then morality can not exist outside of those associations.
Without a moral system, in this case without a religion, people have no incentive to behave in a moral fashion and there is nothing keeping them from a hedonistic lifestyle. However, many athiests seem to live a morally upright life without professing any religion. My theory on this is that, living in a society that is predominantly Christian, athiests take in the dominant mores of their society and, without professing any religion, still subconsciously hold a fascimile of one through their acceptance of dominant social mores.
Without a moral system, in this case without a religion, people have no incentive to behave in a moral fashion and there is nothing keeping them from a hedonistic lifestyle. However, many athiests seem to live a morally upright life without professing any religion. My theory on this is that, living in a society that is predominantly Christian, athiests take in the dominant mores of their society and, without professing any religion, still subconsciously hold a fascimile of one through their acceptance of dominant social mores.