4. Groups of Four Four things are helpful, etc. mind … principles—keen, aware, and mindful, rid of covetousness and displeasure for the world. <em>What four things should be completely understood?</em> Four foods: edible food, whether solid or subtle; contact is the second, mental intention the third, and consciousness the fourth. <em>What four things should be given up?</em> Four floods: sensuality, desire for rebirth, views, and ignorance.