According to scientific speculation, 25,000 to 50,000 years ago, human beings had the concept of soul, or the concept of living after death. However, generally speaking, primitive people's simple and simple concept of soul often contains strong material character. It was not until religion and philosophy gradually developed that the concept of human soul began to tend to the immaterial "spiritual unity". For example, some religions and philosophies believe that the soul can exist alone after the death of the body, and then regard it as an immortal spiritual entity. Guy admits that the existence of soul, although generally considered as an element of human life, can dominate human perception and activities. Modern archaeology advocated by many religions, philosophies and sociology has great differences on the theory, characteristics, origin and research of nature. Some people claim that it is synonymous with spirit or soul, such as the word soul-life, which is almost the same as spiritual life and spiritual life. Those who advocate the theory of soul, if they talk about the relationship between body and mind, are based on dualism. From the perspective of the relationship between spirit and pragmatics, it is based on ontology. Phenomenology, realism and materialism in modern philosophy generally oppose the existence of religious souls.
At present, no one knows the detailed truth about the real existence of the soul, but the imprint of history is undeniable, which requires further scientific research.