This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...ull, active, purposefully directed awareness of reality — or he can unfocus it and let himself drift in a semiconscious daze, merely re- acting to any chance stimulus of the immediate moment,
at the mercy of his undirected sensory-perceptual mechanism and of any random, associational connections it might happen to make.
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When man unfocuses his mind, he may be said to be
conscious in a subhuman sense of the word, since he experiences sensations and perceptions. But in the sense of the word applicable to man — in the sense of a consciousness which is aware of r...