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Dishonesty is the biggest hurdle in acquiring knowledge which can evolve the human mind.
Mind (pronounced /ˈmaɪnd/) is the aspect of intellect and consciousness experienced as combinations of thought, perception, memory, emotion, will, and imagination, including all unconscious cognitive processes. The term is often used to refer, by implication, to the thought processes of reason. Mind manifests itself subjectively as a stream of consciousness.
Theories of mind and its function are numerous. Earliest recorded speculations are from the likes of Zoroaster, the Buddha, Plato, Aristotle, Adi Shankara and other ancient Greek, Indian and, later, Islamic philosophers. Pre-scientific theories grounded in theology concentrated on the supposed relationship between the mind and the soul, human’s supernatural, divine or god-given essence.
Which attributes make up the mind is much debated. Some psychologists argue that only the higher intellectual functions constitute mind, particularly reason and memory. In this view the emotions—love, hate, fear, joy—are more primitive or subjective in nature and should be seen as different from the mind as such. Others argue that various rational and emotional states cannot be so separated, that they are of the same nature and origin, and should therefore be considered all part of what we call the mind.
In popular usage mind is frequently synonymous with thought: the private conversation with ourselves that we carry on “inside our heads.” Thus we “make up our minds,” “change our minds” or are “of two minds” about something. One of the key attributes of the mind in this sense is that it is a private sphere to which no one but the owner has access. No one else can “know our mind.” They can only interpret what we consciously or unconsciously communicate.
( Source of above: http://en.wikipedia.org/wiki/Mind)
Is the thought, so private? Does thought has no vibration at all beyond its meta physical world? Is is not reflected from body language? The concept that thought process is a private matter is more of a belief than the actuality. Similar is the belief about uniqueness of each human mind. With nearly similar thoughts in so many minds at the same time, how each individual mind becomes unique? It requires an introspection.