One of the aims of meditation practice is to develop a mind that sees, and does not get hooked into events too easily. The “Ten Thousand things” in this quote is a shorthand way of talking about all the experiences – good and bad – which arise and pass away. It stands for all of reality, which contains the right mix of experiences for our growth, and with its ebbs and flows is continually rearranging itself.
When the ten thousand things are viewed in their oneness
we return to the origin
and remain where we have always been.
Sosan, Third Zen Patriarch, died 606