This sentence was put forward by ProTegla, a representative of the Wise School. He believes that people's feelings are the standard for judging everything. Denying God's will is the standard to measure everything. It established human dignity and authority and embodied the essence of Greek cultural humanism. At that time, it played a great role in ideological enlightenment and liberation. However, blindly taking people as the criterion also has negative effects. This is easy to lead to moral ethics, which is not conducive to the establishment of normal social order and social morality. Deny the role of moral laws. Overemphasizing people's subjective feelings, denying the objectivity of truth, and ignoring the * * * nature of knowledge will easily lead to subjective arbitrariness and extreme individualism.