Consciousness is an appearance, Will the Reality which is the immortal force that never dies with the death of individuals, never perishes through change. It may manifest itself in a mortal shape as individuals, but it cannot itself cease to be. The Will is imperishable being. Schopenhauer's Will is more like the Mula-Prakriti of the Vedanta, which is essentially unconscious activity, rather than Reality whose essential nature is consciousness. Individual consciousness which expresses itself in the intellect is defined by the constitution of Prakriti whose representation is the intellect.
Intellect is the medium through which intelligence becomes manifest.
But, in the Vedanta, Prakriti is not Reality, and consciousness is not the expression of Prakriti. Consciousness is the essence of Reality which is beyond Prakriti. But it is true that the intellectual intelligence in man is controlled by its unconscious Master, the Prakriti with its primary modes of Sattva, Rajas and Tamas. Instinct, craving, urge, is at the root of even the operation of reason. We are here reminded of Bradley's saying that metaphysics is the finding of bad reasons for what we believe upon instinct, and that to find these reasons, again, is no less an instinct.