大乘起信論裂網疏 2.26

2.26

"Furthermore, as for being genuinely empty: because from the beginningless past it does not associate with any defiled dharmas, because it is free from the differentiated marks of all dharmas, and because it has no false and discriminative mind. It should be known that tathatā is neither with marks nor without marks, neither [both] with [and] without marks, nor neither with [nor] without marks; it is neither a single mark nor differentiated marks, neither [both] a single [and] differentiated marks, nor neither a single [nor] differentiated marks. In brief, because it cannot be touched [and realized] by the falsely discriminative minds of all sentient beings, it is established as empty. According to the true principle, deluded thoughts are non-existent, and the nature of emptiness is also empty, because that which is refuted is non-existent, and that which refutes is also non-existent."