仁王般若經疏 2.115

2.115

"Existence and non-existence are originally two,
just like the two horns of an ox;
illumined understanding sees non-duality,
yet the two truths are ever not identical.
When the understanding mind sees non-duality,
seeking duality, it cannot be found;
it is not that the two truths are one,
yet if not two, how could [one] be found?
In understanding, it is ever naturally one;
in truth, it is ever naturally two;
one who penetrates this non-duality
truly enters the ultimate truth."