"Behind this world-show, behind these physical phenomena, behind these names and forms, behind the feelings, thoughts, emotions and sentiments, there dwells the silent witness, the immortal friend and real well-wisher, the Purusha or world Teacher, the unseen Governor, the unknown Yogi, the invisible Power, the hidden Sage. That is the only permanent Reality and the living Truth. The goal of human life is to realize the Reality behind the changing phenomena."
-Swami Sivananda