Hope is what keeps man going during even the toughest time, and it provides a glimmer in the darkness. When you feel hope then you believe that things will change for the better and your situation is not hopeless. If you lose all hope then you lose all reason for living and life is meaningless. Without any hope man would be lost, and our species would quickly die out and become extinct.
A strange thing is memory, and hope; one looks backward, and the other forward; one is of today, the other of tomorrow. Memory is history recorded in our brain, memory is a painter, it paints pictures of the past and of the day