"Blessed are the poor in spirit," Jesus said, "for theirs will be the kingdom of heaven."1 What does "poor in spirit" mean? No inner baggage, no identifications. Not with things, nor with any mental concepts that have a sense of self in them. And what is the "kingdom of heaven"? The simple but profound joy of Being that is there when you let go of identifications and so become "poor in spirit." This is why renouncing all possessions has been an ancient spiritual practice in both East and West.

Eckhart Tolle

from A New Earth: Awakening to Your Life's Purpose