If this is right, then something like the following line of argument might be attributed to them. Views about right and wrong forms of conduct vary significantly from society to society. What is right for one individual may not be right for another. Consider how attitudes have changed about slavery, or birth control over the course of several centuries.
Diets differ across societies, among individuals, and over time.
We will return to the topic of Moral Relativism when we read Plato s Meno . Outside of society, human beings would simply do what comes naturally . Acting morally requires, on at least some occasions, that act in a way that does not promote our own personal advantage. Freed of all external constraints human beings will always pursue their own personal advantage. Freed of all external constraints human beings will choose not to act in accordance with the dictates of morality.