All the possible knowing/ understanding/ feeling/ thinking from birth to death can be broadly categorized into four distinct realms like either BELIEF (received from outside) or UNDERSTANDING (belief along with cultivating one’s rational ability of scientifically thinking) or FAITH (gained through experience and reflection) or KNOWING (exposed through realization and divine bliss). As long as one is circumscribed only by belief systems his/her existence revolves around confusions and disputes. It is the zone of pure Bhoga. With understanding, one is pushed into the era of scientific inquiry. It is the zone of mixture of Yoga and Bhoga. Still higher zone of faith (zone of pure Yoga) involves the process that leads to Self-realization, Self-stabilization and then Self-expression. The zone of Self-enlightenment continues infinitely with eternal peace.
The following pictorial representation crystallizes the above idea.