肇論新疏 2.110

2.110

夫聖心者，微妙無相，不可為有；用之彌勒，不可為無。不可為無，故聖智存焉；不可為有，故名教絕焉。

Now, the sage mind is subtle and animitta, and cannot be considered existent; its application is ever more active, and cannot be considered non-existent. Because it cannot be considered non-existent, holy wisdom is preserved therein; because it cannot be considered existent, names and teachings are extinguished therein.