"Blessed are the poor in spirit, for theirs is the kingdom of heaven."
"Poor in spirit" means to be humble. Humility is the realization that all your gifts and blessings come from the grace of God. To have poverty of spirit means to be completely empty and open to the Word of God, to the miracle of life. When we are an empty cup and devoid of pride, we are humble and we can evolved. Humility brings an openness and an inner peace, allowing one to do the will of God. He who humbles himself is able to accept our frail nature, to repent, and to allow the grace of God to lead us to Conversion.
If every man were humble and poor in spirit, there would be no war!