of matter, water and elements of water, light and elements of light, eye and what is visible, ear and what is audible, smell and the objects of smell, taste and objects of taste, touch and objects of touch, speech and objects of speech, sexuality and objects of its enjoyment, feet and what is moveable, hands and what is seizable, mind and the objects of mind, thought and objects of thought, reason and objects of reason, self-consciousness and objects of self-consciousness, insight and objects of illumination, life-force and object of life-force. After setting the foundation of its dream theory and deep-sleep theory, the Prashna Upanishad defines Atman as Purusha (Cosmic Self, Consciousness, Soil of all beings, Universal principle), The Prashna Upanishad answers that happiness and bliss in man is this established calm state of knowing and dwelling in the Atman, the spiritual state of truth, beauty and goodness. What is meditation, and why meditate? - Fifth Prashna The Prashna Upanishad opens the fifth section with the question: if a human being sincerely meditated on the symbol "Om" (Aum) until his death, what would he obtain by it? The section then asserts that one meditates to know "Self" (Atman-Brahman), then metaphorically presents the different levels of meditation, the levels of knowledge gained, and the consequent effect on the person of such meditation in this and after life. The Upanishad asserts that there are three levels of Atma (Self) knowledge, the lowest level being partial from meditating on the first letter of Aum, that is A. This leads to a quick rebirth, but with ethical strengths and consequently greatness. The intermediate level of self-knowledge is akin to meditating on two letters of Aum, that is A and U. The intermediate level of self-knowledge leads the man to gain ethical behavior and the world of Manas (moon, mind), he first enjoys the heavenly life and thereafter is reborn to the world of man. The person who meditates on all aspects of self, that is all three syllables A, U and M, reaches full self-knowledge, is liberated from all suffering, sin and fears, reaches the world of Brahman. Such a man "beholds the Self as universal, pervading in all creatures, and eternal". The Prashna Upanishad symbolically likens the three states of knowledge to sets of three: being awake, dream-sleep and deep-sleep; three pronunciations - tara, mandra and madhyama. (true but high tone, unclear but pleasant-base