Circles in traditional thinking

Physically speaking, an ellipse has two focuses, similar to the earth's orbit in geography. The orbit is oval with perihelion and apohelion. However, a perfect circle has only one focus. This metaphor for life is the most important part to explain human nature, which lies in living in things and thinking for itself. Life can't exist without things, but as a realistic person, he has the idea of keeping his true soul and self. He doesn't know whether it is material or not. Without it, he can't think and lose his ideal.