"Blessed are the poor in spirit, for theirs is the Kingdom of Heaven." "Poor in spirit" means mild in ego, and the ego is, as its nature, tyrannical, and all the tyranny there is in the world is only caused by the ego. When the ego is placed before God--in other words, when the ego is illuminated with the knowledge of God--it becomes faded; for it denies its limited being and it realizes the being of God. So it loses all its tyranny and becomes mild, which is being poor in spirit. This makes man's whole life heaven, here and in the hereafter.