All my teaching issues from the conception of one's own nature, and those who assert the existence of anything outside it betray their ignorance of its nature. Shila, samadhi and prajna – conduct, meditation and wisdom – all these are forms of one's own nature. When there is nothing wrong in it, we have shila; when it is free from ignorance, it is prajna; when it is not disturbed, it is samadhi.

-- Venerable Hui Neng