Need of transforming mechanical mind

Cannot the mechanical mind be fired out by a spiritual Force? What is the need of transforming it?

You can’t fire out a part of the being. What is called the mechanical mind is necessary for the maintenance (in the physical) of things gained — it is by conservation and repetition that Nature does that. The subconscient is the basis of conservation and the mechanical mind is the means of repetition. Only they have to be enlightened and change and conserve and repeat the new divine things and not the old undivine ones.

Sri Aurobindo