Much of the "Brihadaranyaka Upanishad"
follows the sage, Yajnavalkya, and his wife. In these stories, Yajnavalkya expounds upon philosophical issues such as
consciousness, creation, the Self and karma. It also includes passages on ethics, psychology and metaphysics.
Regarding the Self, the "Brihadaranyaka"
states that only experiential knowledge of Atman and
Brahman (the universal Self) can lead to samadhi, or
enlightenment. The text describes specific methods of meditation, rites and rituals, as well as three virtues yogis should practice. These virtues are generosity, compassion and self-restraint. They are the
foundation of the yamas (or ethical rules) in Hinduism and
yoga, and are described by the sage, Patanjali, in his Yoga Sutras.