To be constantly without desire is the way to have a vision of the mystery of heaven and earth. For constantly to have desire is the means by which their limitations are seen.
LaoziHeaven's Way is like stretching a bow. The high is lowered and the low is raised. Excess is reduced and deficiency is replenished. Heaven's Way reduces excess and replenishes deficiency. People's Way is not so. They reduce the deficient and supply the excessive.
Laozi