Reviewing Chapter 12, "The Mind and Its Potential", describing how Buddhas depends on sentient beings and how we can treasure sentient beings because of this
Completing teaching from Chapter 12, explaining various meanings of "equality of samsara and nirvana" and how clear light mind is understood according to sutra and tantra vehicles.
Continuing teaching from Chapter 12, explaining how it it is possible to develop positive mental states limitlessly and why afflictive mental states are not in the nature of the mind.