6.
The Discourse on Both
166.
"There are, monks, these four practices.
What are the four?
The difficult practice with sluggish direct knowledge, the difficult practice with quick direct knowledge, the easy practice with sluggish direct knowledge, the easy practice with quick direct knowledge.
"There, monks, that practice which is difficult with sluggish direct knowledge, this practice, monks, is declared to be inferior in both respects. Because this practice is difficult, by this it is declared to be inferior; because this practice is sluggish, by this it is declared to be inferior. This, monks, is a practice declared to be inferior in both respects.
"There, monks, that practice which is difficult with quick direct knowledge, this practice, monks, is declared to be inferior because of its difficulty.
"There, monks, that practice which is easy with sluggish direct knowledge, this practice, monks, is declared to be inferior because of its sluggishness.
"There, monks, that practice which is easy with quick direct knowledge, this practice, monks, is declared to be sublime in both respects. Because this practice is easy, by this it is declared to be sublime; because this practice is quick, by this it is declared to be sublime. This, monks, is a practice declared to be sublime in both respects. These, monks, are the four practices." The sixth.