The cosmic Force is under the control of the overmind. The supermind does not act on it directly – whatever comes down from there is modified so as to pass through the overmind and take a lesser form suitable to the plane on which it acts, mental, vital or physical. But this intervention is exceptional in the ordinary play of the cosmic forces.


The cosmic spirit contains the supermind, but it keeps it above and works for the present between the overmind and the physical. It is only when the Ignorance is removed that the supramental becomes directly a dynamic part of the workings of cosmic Nature here. Till then there are only reflections of it.


page 1082, Letters on Yoga , volume - 23 , SABCL

The overmind is a sort of delegation from the supermind (this is a metaphor only) which supports the present evolutionary universe in which we live here in Matter.


page 243 , Letters on Yoga , volume - 22 , SABCL