"Intelligence is the capacity to be in the present. The more you are in the past or are in the future, the less intelligent you are. Intelligence is the capacity to be here-now, to be in this moment and nowhere else. Then you are awake."

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Man ordinarily is a robot. He lives apparently awake, but not really. He walks, he talks, he acts, but it is all as if in sleep - not conscious of what he is doing, not conscious of what he is saying, not conscious of all that surrounds him. He moves surrounded in a dark cloud of unawareness. According to Gautama the Buddha, this is the original sin: to live unconsciously, to act out of unconsciousness. In fact, the word 'sin' comes from a root which means forgetfulness. Sin simply means that we are not conscious, aware, alert, that we don't have any inner light to guide us.

— Rajneesh