<ref>Sri Aurobindo. (2012). Sachchidananda: Existence, consciousness, force and bliss. In Letters on yoga I.
It is a factor in all human natures,—restless, desiring, eager, despondent, unstable. Stand back from it and do not allow it to govern or move you. There is a right part of the vital which must be used—ardent, sensitive to the higher things, capable of great love and devotion. Strengthen that and support it on the psychic and on the peace and wideness that comes from above.