If you consider the phenomenon of weight, it is gravity which holds us down. If you could just cut off gravity, even mountains could fly. What is so wonderful about flight? Similarly, it is the weight of our past which is holding us down. And I may say with absolute confidence that the cleaning aspect alone is sufficient to give us most of the blessings of spiritual practice, since ninety percent of our deficiencies, of our drawbacks, of the gravitational hold of samskaras, is released in one stroke.