11. It is designated as having five functions like mind.
As desire, and so on, are not principles different from mind, although they are different functions and produce different effects--according to the text, 'Desire, purpose, doubt, faith, want of faith, firmness, absence of firmness, shame, reflection, fear--all this is mind' (Bri. Up. I,,5, 3); so, on the ground of the text, 'prâna, apâna, vyâna, udâna, samâna--all this is prâna' (ibid.), apâna and the rest must be held to be different functions of prâna only, not independent principles.--Here terminates the adhikarana of what is 'a modification of air.'