On human nature, the pre-Socratic philosophers developed various beliefs and schools of thought. Protagoras is one of the pre-Socratic philosophers, and the most famous Sophists, mostly remembered for his relativist statement about human nature. The famous statement in its entire form is “Man is the measure of all things: of existing things that they exist; of non-existing things that they do not exist.” His philosophy was that the general point of truth of all judgment is relative to the human thinking and the human preference is the standard of all judgment. It is, therefore, the human nature that humans are the ultimate standards. Xenophanes talks about human nature in relation to deity. He pushed the issue of relativism, and his point
