Prana the vital breath, is born of self. Like a person and his shadow, the self and Prana are inseparable. Prana enters the body at birth but does not die with the body. [PRANA UPANISHAD]

The wise speak not of senses of speech, sight, hearing, feeling, but only of a group of pranas, for these are all manifestations of prana. [CHARAKHA SAMHITA]

Regulate your breathing, and there by control the mind. [C.K. So IYENGAR]

For breath is life and if you breath well, you will live long on earth. [SANSKRIT PROVERB]

Breathing in, I calm body and mind. Breathing out, I smile Dwelling in the present moment. I know this is the only moment. [THICH NHAT HANH]