"Huang-Po says, 'Buddhas and beings share the one and the same mind. Otherwise they don't differ. This mind has never had any form or characteristics. It has never been created. It has never been destroyed. Thus, it is right here. If you think about it, you miss it. It's like the sky It has no borders. Only this mind is the buddha. Buddha and beings aren't different. However, beings are attached to perceptions outside themselves. But the more they seek, the more they get lost. They send a buddha to find a buddha. They use the mind to chase the mind. They can exhaust themselves for kalpas, but they'll never succeed. They don't realize that when they put an end to thoughts and reasoning, the buddha will appear before them. The mind is the buddha. The buddha is an ordinary being. When it's an ordinary being, the mind doesn't contract. When it's a buddha, it doesn't expand. When it meets conditions, it acts. When conditions stop, it ends. It doesn't need to be pinned down or realized. It is already perfect. If you aren't willing to believe that this is the buddha, even if you cultivate for endless kalpas, you will never reach the Way. To cling to the perception of a dharma means that the dharma exists outside the mind. Hence, you are attached to perceptions. Whether you do evil or good, you are attached to perceptions. When you do evil while attached to perceptions, you waste your rebirth. When you do good while attached to perceptions, you waste your hardships. Neither can compare with recognizing your own mind right now. Outside the mind, there are no dharmas. The mind is the dharma. Outside this dharma, there is no mind. You can use the mind to eliminate the mind, but the mind still exists. And to cling to perceptions of no dharmas means to allow perceptions of attachment and non-attachment, good and bad, mortal or sage to continue to exist."

- from the commentaries translated by Red Pine for The Diamond Sutra