In theoretical as well as applied psychology no term is more misleading, or confusing than the term consciousness. We use the term often in our conversation; we come across it in our study; but when we are asked to define it properly, to explain its significance, its meaning, or the idea for which that word stands, we are unable to do so.
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And that is because there are so many varied ideas concerning consciousness. There are so many aspects of consciousness, there are so many states of consciousness that we get mixed up-that is, we confuse one with the other. So we must know thoroughly the true significance of the term. Then we can make such distinctions as inner consciousness and outer consciousness.
What is truly meant by consciousness, or what is the principle back of that term? There are many ideas which cannot be expressed properly for lack of words, or lack of terms. The word consciousness is really derived from the Latin root scio, to know, and con, together; so the word consciousness from the derivative meaning would signify: to know together. We use the term generally in the sense of being conscious of a fact. That is, consciousness means knowing an object, as it were; knowing something. But the word consciousness really indicates two things-subject and object. It implies the duality of existence. There is one who is the knower, the subject, the ego, the perceiver. I know it; I am conscious of it; I perceive it; I think about it. Therefore there is always the subject, the ego-I-as the background of any form of consciousness.