All men should know fully the senses, the mind and the understanding. The three universal tendencies qualities called Goodness, Darkness and Ignorance, exist, dependent on the senses, the mind, and the understanding.
पुरुषैरिन्द्रियाणीह वेदितव्यानि कृत्स्नशः। तमो रजश्च सत्त्वं च तेऽपि भावास्तदाश्रिताः॥