This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...onsciousness is: perception, cognition, and the control of action.
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An unobstructed consciousness, an integrated consciousness, a thinking consciousness, is a healthy consciousness.
A blocked consciousness, an evading consciousness, a consciousness tom by conflict and divided against itself, a consciousness disintegrated by fear or immobilized by depression, a consciousnes
s dissociated from reality, is an unhealthy consciousness. (For a fuller discussion of this issue, see the chapter entitled “Objectivism and Psychology” in my book Who Is Ayn RancP. )