3.

The Chapter on Unwieldiness

21. "I do not, monks, perceive any other single phenomenon that is thus unwieldy when not developed as this, monks, the mind. The mind, monks, when not developed, is unwieldy." The first.

22. "I do not, monks, perceive any other single phenomenon that is thus wieldy when developed as this, monks, the mind. The mind, monks, when developed, is wieldy." The second.

23. "I do not, monks, perceive any other single phenomenon that thus when not developed leads to great harm as this, monks, the mind. The mind, monks, when not developed, leads to great harm." The third.

24. "I do not, monks, perceive any other single phenomenon that thus when developed leads to great benefit as this, monks, the mind. The mind, monks, when developed, leads to great benefit." The fourth.

25. "I do not, monks, perceive any other single phenomenon that thus when not developed, not manifest, leads to great harm as this, monks, the mind. The mind, monks, when not developed, not manifest, leads to great harm." The fifth.

26. "I do not, monks, perceive any other single phenomenon that thus when developed and become manifest leads to great benefit as this, monks, the mind. The mind, monks, when developed and become manifest, leads to great benefit." The sixth.

27. "I do not, monks, perceive any other single phenomenon that thus when not developed and not cultivated leads to great harm as this, monks, the mind. The mind, monks, when not developed and not cultivated, leads to great harm." The seventh.

28. "I do not, monks, perceive any other single phenomenon that thus when developed and cultivated leads to great benefit as this, monks, the mind. The mind, monks, when developed and cultivated, leads to great benefit." The eighth.

29. "I do not, monks, perceive any other single phenomenon that thus when not developed and not cultivated brings suffering as this, monks, the mind. The mind, monks, when not developed and not cultivated, brings suffering." The ninth.

30. "I do not, monks, perceive any other single phenomenon that thus when developed and cultivated leads to happiness as this, monks, the mind. The mind, monks, when developed and cultivated, leads to happiness." The tenth.

The Chapter on Unwieldiness is the third.