The calmed say that what is well-spoken is best; second, that one should say what is right, not unrighteous; third, what's pleasing, not displeasing; fourth, what is true, not false.
What is this world condition? Body is the world condition. And with body and form goes feeling, perception, consciousness, and all the activities throughout the world. The arising of form and the ceasing of form-everything that has been heard, sensed, and known, sought after and reached by the mind-all this is the embodied world, to be penetrated and realized.
What we are today comes from our thoughts of yesterday, and our present thoughts build our life of tomorrow: our life is the creation of our mind. If a man speaks or acts with an impure mind, suffering will follow him as the wheel of the cart follows the beast that draws the cart. If a man speaks or acts with a pure mind, joy follows him as his own shadow.
Imagine that every person in the world is enlightened but you. They are all your teachers, each doing just the right things to help you learn perfect patience, perfect wisdom, perfect compassion.
So too, monks, I saw the ancient path, the ancient road traveled by the Perfectly Enlightened Ones of the past. And what is that ancient path, that ancient road? It is just this Noble Eightfold Path; that is, right view, right intention, right speech, right action, right livelihood, right effort, right mindfulness, right concentration.
For one who is a learner and who has not yet come to master their mind, but who dwells aspiring for peace from that which binds, making it a matter concerning himself, I know of no other thing as helpful as giving close attention to the mind.