Zen Dawn, J.C. Cleary wrote:The Great Prajñāpāramitā Sūtra says: “To have no objects of thought is called mindfulness of buddha.” What is meant by “having no objects of thought”? Being mindful of the buddha-mind is called “having no objects of thought.” There is no separate Buddha apart from mind, and no other mind apart from Buddha. To be mindful of Buddha is to be mindful of mind. To seek mind is to seek Buddha. Why? Consciousness has no shape, Buddha has no form. Knowing this truth is pacifying mind. With constant mindfulness of Buddha, grasping at objects does not arise. Then it is totally formless, everywhere equal and without duality. When you enter this station, the mind that [actively] remembers Buddha fades away and no longer has to be summoned. When you witness this type of mind, this is the true reality-nature body of the Thathāgata. It is also called the Correct Dharma, buddha-nature, the real identity of all phenomena, reality itself. It is also called the Pure Land. It is also called bodhi, diamond samādhi, fundamental enlightenment, and so on. It is also called the realm of nirvāna, and prajñā, and the like. Though the names are countless, they all share one and the same essence. There is no sense of the subject observing and the object observed.