Definizione e Significato di "day and night cannot dwell together"

What is the origin of the proverb "day and night cannot dwell together" and when to use it?

The proverb "day and night cannot dwell together" originates from the natural contrast between day and night, which never coexist at the same time. It is often used to express the idea that two opposing forces, beliefs, or individuals cannot exist in harmony. This saying is sometimes linked to cultural or moral conflicts, emphasizing that some differences are too great to be reconciled. It also serves as a caution that attempting to unite fundamentally opposite things may lead to tension or failure.