The Spirit is the basis for the cognition of the external world and experiencing the inner world. The Vedas and Vedangas, music and literature, physics and chemistry, botany and biology - all these different branches of knowledge are related to the phenomenal universe. People devote their lives mainly to these studies. But even worldly knowledge exists to point the way to spiritual awareness. Without spiritual knowledge, all other knowledge is valueless.
Every man has to enquire every moment about the purpose and goal of life.
Eating, drinking, sleeping, and passing on cannot be the meaning of human life. All these are common to birds and beasts. He is endowed with faculties which can enable him to rise above the animal to the human and the divine level. Each is related to a state of consciousness. In the waking state, man is awake and experiences the outer world through sight, hearing, speech and other senses.