The Buddha said people are deluded. This is why when they act they fall into the river of endless rebirth. And when they try to get out they only sink deeper. And all because they don’t see their nature. If people weren’t deluded why would they ask about something right in front of them? Not one of them understands the movement of his own hands and feet. The Buddha wasn’t mistaken. Deluded people don’t know who they are. A Buddha and no one else can know something so hard to fathom. Only the wise knows mind, this mind called nature, this mind called liberation. Neither life nor death can restrain this mind. Nothing can. It’s also called "the Unstoppable Tathagata," the Incomprehensible, the Sacred Self, the Immortal, the Great Sage. Its names vary but not its essence. Buddhas vary too, but none leaves his own mind. The mind’s capacity is limitless, and its manifestations are inexhaustible. Seeing forms with your eyes, hearing sounds with your ears, smelling odors with your nose, tasting flavors with your tongue, every movement or state is your entire mind. At every moment, where language can’t go, that’s your mind.
The sutras say, "A Tathagata’s forms are endless. And so is his awareness." The endless variety of forms is due to the mind. Its ability to distinguish things, whatever their movement or state, is the mind’s awareness. But the mind has no form and its awareness no limit. Hence it’s said, "A Tathagata’s forms are endless. And so is his awareness." A "material body of the four elements" is trouble. A material body is subject to birth and death. But the real body exists without existing, because a Tathagata’s real body never changes. The sutras say, "People should realize that the Buddha-nature is something they have always had." Kashyapa only realized his own nature.
-Bodhidharma (Red Pine translation)