buddha nature and karma

"The physical body depends on karma for its existence and has no nature of its own, just as a wave depends on karma for its existence and has no nature of its own. The sea is one, while waves are countless. Noble sons and daughters are also like this. There is only one sea of our buddha nature. But when people are confused, the sea of buddha nature becomes the sea of consciousness, and the sea of consciousness becomes the sea of passion, and the sea of passion becomes the sea of karma, and the sea of karma becomes the sea of suffering, and from the sea of suffering, they receive countless, limitless karmic bodies. Thus, on top of confusion, they pile up confusion without end and without limit. But all those illusions can't compare to the one reality, namely, the true form of all dharmas."

Taken from: The Diamond Sutra by Red Pine