One thing, all things: move ...

One thing, all things: move among and intermingle, without distinction. To live in this realization is to be without anxiety about non-perfection. To live in this faith is the road to non-duality, because the non-dual is one with the trusting mind.
 Sengcan

Quotes from the same author

The great way is not difficult for those who have no preferences. When like and dislike are both absent everything becomes clear and undisguised. Make the smallest distinction however and heaven and earth are set infinitely apart.
 Sengcan
The struggle between "for" and "against" is the mind's worst disease.
 Sengcan
For the unified mind in accord with the Way all self-centered striving ceases. Doubts and irresolutions vanish and life in true faith is possible. With a single stroke we are freed from bondage; nothing clings to us and we hold nothing. All is empty, clear, self-illuminating, with no exertion of the mind's power.
 Sengcan
Do not try to drive pain away by pretending it is not real. If you seek serenity in oneness, pain will vanish of its own accord.
 Sengcan
When you try to stop activity to achieve passivity your very effort fills you with activity.
 Sengcan