Epicurus (Greek?0?2π?0?7κουρο?0?9 English Epicurus, 341 BC ~ 270 BC) Ancient Greek philosopher, atheist, Epicurus school the founder of. Epicurus believed that the task of philosophy is to study the nature of nature, get rid of religious superstition, and distinguish the boundaries between pain and desire in order to achieve a happy life. His philosophy can therefore be divided into three components: physics, maxims (mainly discussing logical and epistemological issues) and ethics. Epicurus believed that feelings were the criterion of truth. Feelings are direct, and there is no error. Errors only occur in the judgment of feelings. Based on sensory experience, he affirmed the existence of objects and further developed Democritus's atomic theory. Modified Democritus's view that there are infinite differences in the size and shape of atoms, adding the characteristic of weight related to the movement of atoms. It is proposed that atoms have three kinds of motion: the motion of falling vertically due to weight, the deflection motion slightly deviating from the straight line, and the resulting collision motion. Epicurus believed that the color of objects and other perceptible properties are objective, human feelings are reliable, and concepts come from feelings. He overcame the tendency of Democritus and ancient philosophers to distrust feelings and opposed doubt. On and Plato's Transcendentalism. Epicurus' ethical theory believes that happiness is the purpose of life and the highest inherent good. However, different pleasures should be distinguished. Relieving the fear of gods and death, restraining desires, staying away from political affairs, carefully measuring and choosing between happy and painful things, and achieving physical health and mental peace, this is the purpose of life. Epicurus also believed that humans are creatures whose criterion is personal happiness. The country is established on the basis of mutual agreement. Justice is a contract between people not to harm each other. What is conducive to the relationship between people is just, otherwise it is unjust. He is often quoted as saying: "Let us eat and drink, for tomorrow we will die." He exhorted people to enjoy themselves in time.