"This is the Truth- As from a well-blazing fire, sparks By the thousand issue forth of like form, So from the Imperishable, my friend, beings manifold are produced, and thither also go. Heavenly, formless is the person. He is without and within, unborn, Breathless, mindless, pure, Higher than the high Imperishable. From Him is produced breath, Mind and all the senses, Space, wind, light, water, And earth, the supporter of all. Fire is His head; His eyes, the moon and the sun; The regions of space, His ears; His voice, the revealed vedas; Wind His breath; His heart, the whole world. Out of His Feet, the earth, Truly, He is the Inner Self (atman) of all." 

- Mundaka Upanishad