The qualities of goodness, darkness and ignorance originate from their counterparts. These exist equally in all creatures. These are called qualities and should be known by the actions they produce.
रजस्तमश्च सत्त्वं च यत्र एते स्वयोनिजाः। समाः सर्वेषु भूतेषु तान् गुणानुपलक्षयेत्॥