And what is right purpose that is noble, undefiled, transcendent, a factor of the path? It’s the thinking—the placing of the mind, thought, planting, implanting, embedding of the mind, verbal process—in one intent on the noble, intent on the undefiled, who possesses the noble path and develops the noble path. This is right purpose that is noble.

They make an effort to give up wrong purpose and embrace right purpose: that’s their right effort. Mindfully they give up wrong purpose and take up right purpose: that’s their right mindfulness. So these three things keep running and circling around right purpose, namely: right view, right effort, and right mindfulness.