know yourself. θι σεαυτ? ν), according to legend, is one of the three proverbs carved in the temple of Apollo in Delphi, and it is also one of the most famous ones. The other two sentences are "you are" (ε ι') and "Wu Guo" (μ η δ ε ν α γ ν). Or this sentence comes from one of the seven sages of ancient Greece, Kalon of Sparta (χ? λ ω ν), or from Thales, or from Socrates. The traditional interpretation of this sentence is to persuade people to have self-knowledge and understand that people are just people, not gods. According to Diogenēs Laertius's records, Thales was asked, "What is the hardest thing?" He replied, "Know yourself." (See Book of Philosophers' Words and Actions, Volume I) In the preface to Zur Genealogie der Moral, Nietzsche also made a big fuss about "knowing yourself". He said: "We are inevitably strangers to ourselves, we don't understand ourselves, we don't understand ourselves, and our eternal judgment is:' The farthest from everyone is himself.' -for ourselves, we are not' knowers' ... "

Know yourself

Socrates always claims to know nothing. His famous saying is: Know yourself.

Its philosophical significance lies in that it is the embodiment of humanism to emphasize the role of knowledge and thus the status of human beings. He believes that people must have knowledge to achieve good; Ignorance is the primary source of all evil. He combined morality and knowledge, and thought that moral behavior must be based on knowledge. The highest knowledge is the understanding of the concept of "goodness", and goodness includes virtues such as health, wealth, status, honor, justice and courage.

Socrates put forward philosophical propositions around people's spiritual cultivation, such as what is happiness, virtue, truth, justice, etc. One of the themes that runs through it is to persuade people not to focus on the pursuit of things outside their bodies, but to transform their souls, pursue truth and wisdom, and become morally perfect and real people.