Water that is not agitated is naturally still.
A mirror that is not filmed over is naturally
clear. In the same way the mind need not
be purified. When you take away what
disturbs it, then its inherent purity is
manifest. Happiness is not something
to be sought. When you take away worries,
then naturally you know happiness

Vegetable Roots Discourse: Wisdom from Ming China on Life and Living - Caicentan by Hong Zicheng (Shoemaker & Hoard, 2006), Translated by Robert Aitken with Daniel W. Y. Kwok, p. 71