[[Moral naturalism]] rejects divine revelation as the source of ethics, holding that morals emerged natural causes. The nature of these natural causes is widely debated, ranging from features inherent in the nervous system of humans to natural pressures that led to emergence of the best course for survival as a society, much as instincts emerge as the best course for survival among animals in the wild. | [[Moral naturalism]] rejects divine revelation as the source of ethics, holding that morals emerged natural causes. The nature of these natural causes is widely debated, ranging from features inherent in the nervous system of humans to natural pressures that led to emergence of the best course for survival as a society, much as instincts emerge as the best course for survival among animals in the wild. |