Sri Aurobindo
Letters of Sri Aurobindo
Volume I - Part 2
What do you mean by a personal vital? What people call personality is a formation. There is no unchangeable vital personality. There is a Presence called the Purusha, something projected by the Self or Atman, which supports on each plane the formation of the personalities on that plane, but the Purusha is not a 
personality and it has no name or form. But it is best for you not to speculate too much about these subtle things at present; you have not sufficient experience to grasp correctly the complexity of the truth. The one thing you are concerned with is that you have a soul, a psychic being, which stands for your centre of existence, a part of the Divine. Become aware of that and put all your mental, vital and physical nature in relation to it, in order that they may become purified, harmonised, divinised, and the supramental being and nature may descend and be manifested in you – for until this is done, this conscious linking and relation with the psychic centre, there can be no supramental descent.