The rooted and fundamental conception of Vedanta  is that there exists somewhere, could we but find it,  available to experience or self-revelation, if denied to  intellectual research, a single truth comprehensive and  universal in the light of which the whole of existence  would stand revealed and explained both in its nature  and its end. This universal existence, for all its multitude  of objects and its diversity of forces, is one in substance  and origin; and there is an unknown quantity, X  or Brahman to which it can be reduced, for from that it  started and in and by that it still exists. This unknown  quantity is called Brahman.