What can be meant by knowledge is the true organ of sight not the eyes (Panchatantra)

Panchatantra, India’s most influential contributions to world (5th Century AD) clearly states, “Knowledge is the true organ of sight, not the eyes”. To understand this, introspection into meaning and definitions of ‘knowledge’ and ‘sight’ are essential.
Plato defines knowledge as ‘justified true belief’ (Wikipedia). This gives rise to the question what is belief. A "belief" is a state of mind, which can be shown by behaviour, without any corresponding "mental" occurrence (Russell). He further states that if a belief is to be causally important it must be defined as a characteristic of behavior. This explanation cannot be termed as definite because the result of the behavior or action determines if the belief held was true or false. If the search for food results in success, the belief was true but in case of failure, the belief is considered false. This does not truly justify that knowledge is true belief.
Knowledge implies that there is a knower and the knowable (or the object). People know many things like whether they feel cold or hot. whether it is raining or snowing, or when the sun will rise or set. How do we know or understand these situations? Descartes argues that the ideas about taste, feel, pain, pleasure, hunger, thirst, sadness or happiness come to us without our consent (Newman). We actually do not have the sensory awareness of any object even if we want to. This is the difference between ordinary perception and judgement. The taste, sound, colour, pains are all perceived through the sense organs and with the assistance of the memory, they reach the imagination. The mind receives the data through the nerves from all parts of the body to produce sensory awareness. The mind has a habit of believing what it perceives. This registers in the mind as an experience or knowledge gained through experience. Each person acts or behaves according to their prior experience or