http:///www.inner.org/powers/powratzn.htm
Ratzon is the spiritual state associated with the lowest of the three heads of keter, the Reisha d'Arich ("the extended head").
With regard to the power of will, it is said "nothing stands before (the force of one's) will," and "there is nothing as forceful as will."
In the partzuf of Arich Anpin (the outer partzuf of keter representing the general power of will in the soul), the "origin of will" is associated with its "crown" or its "skull" referred to as the gulgalta. At this level, "there is no reason (rationale) for will."
