According to Yoga Philosophy though the right knowledge of any phenomena is based on direct cognition, inference or testimony but the cognizance conjured up by words without any substance is devoid of objectivity. The consciousness is an aspect of the ultimate reality or substance, which is functioning, and manifesting itself in five progressive stages at five levels. What we experience or sense as consciousness is the first to five level experiences and the phenomenal cognizance in these stages, which can be described in words, is instrumental one and modification of our mind. Therefore the state of consciousness as we experience is an out come of the five mental modes, viz. valid knowledge, error, imagination, deep sleep and recollection. So cognizance conforming to a word/language is devoid of a phenomenal object. Since we may speak of the unicorn though there is no real phenomenal object as such and thus the word/words may produce cognition, even though its object is nonexistent. The real consciousness and the study of consciousness cannot be instrumental one. The Yoga Sūtra suggests that the direct and unwavering awareness is required and that pure consciousness is devoid of any thing known by way of perception, memory, imagination, reasoning and intuition. The Consciousness in Yoga Sūtra is characterized as one of the four states of consciousness namely Vitarka accompanied by reasoning, Vicāra accompanied by reflection, Ānanda accompanied by bliss and Asmitā accompanied by sense of pure being. And then, after transcending these states of consciousness the one enters into the realm of real consciousness, that is the purest and non-intentional state of the self or the Knower or the Consciousness itself