Yuga
Yuga (युग) means “age,” “epoch,” or “era.” In Hindu cosmology, it refers to one of the four ages (satya, treta, dvapara, kali) that cycle through cosmic time, each representing a different degree of spiritual decline.
Overview
The four yugas form a mahayuga (great age) lasting 4.32 million years: Satya Yuga (1,728,000 years), Treta Yuga (1,296,000 years), Dvapara Yuga (864,000 years), and Kali Yuga (432,000 years). Each yuga is characterized by a progressive decline in virtue, knowledge, and spiritual capacity. The Vishnu Purana states: “In the Satya age, righteousness is full; in Treta, three-quarters; in Dvapara, one-half; in Kali, one-quarter.”
Philosophical Context
The yuga system establishes a cyclical view of history that contrasts with both the linear view of Abrahamic traditions and the progressive view of modernity. Each yuga is associated with specific characteristics: Satya Yuga is the golden age of truth and simplicity; Treta Yuga is the silver age of ritual and sacrifice; Dvapara Yuga is the bronze age of decline; and Kali Yuga is the iron age of darkness and discord. The Bhagavad Gita (4.7–8) explains that Vishnu incarnates in each yuga to restore dharma.
Interpretations
The Kalki Purana describes the future appearance of Kalki (the tenth avatar of Vishnu) at the end of Kali Yuga to restore Satya Yuga. Some modern Hindu scholars interpret the yugas metaphorically as representing stages of human consciousness evolution rather than literal cosmic ages. The Rig Veda (10.90) uses yuga in the sense of “age” or “generation” without the later systematized meaning. The Atharva Veda and Manusmriti also use yuga in various senses.
Verification Notes
- Vishnu Purana Book 1, chapter 3 describes the yuga system.
- Bhagavad Gita 4.7–8 on divine incarnation in each yuga.
- Audited against Wikipedia and Hindu cosmology references (September 2026).