About the meaning of Existence

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In The Book of Healing, Avicenna discussed the mind, its existence, the mind and body relationship, sensation, perception, etc. He wrote that at the most common level, the influence of the mind on the body can be seen in voluntary movements, in that the body obeys whenever the mind wishes to move the body.
He further writes that the second level of influence of the mind on the body is from emotions and the will. As an example, he states that if a plank of wood is placed as a bridge over a chasm, a person could hardly creep over it without falling if that person only pictures himself/herself in a possible fall so vividly that the "natural power of limbs accord with it." He also writes that strong negative emotions can have a negative effect on the vegetative functions of an individual and may even lead to death in some cases.

The word "existence" comes from the Latin word 'existere', meaning to appear or emerge or stand out.