Purity or impurity depends on oneself,No one can purify another. - Gautama Buddha
This is neither the time nor the place, however, to ponder how often the soul, in order to be able to boast of a clean body, has burdened itself with sadness, envy, and impurity. - José Saramago
As much purity one has within, his external circumstances will be that much more favorable. As much impurity there is within, there will be a corresponding amount of unfavorable external circumstances. - Dada Bhagwan
But no perfection is so absolute, That some impurity doth not pollute. - William Shakespeare