Seven perceptions for the welfare, not the decline of bhikkhus: 1. The perception of impermanence 2. The perception of egolessness 3. The perception of the body's impurity 4. The perception of the body's wretchedness 5. The perception of relinquishment 6. The perception of dispassion 7. The perception of cessation (from Anguttara Nikaya 7.46)