rigpa - Thubten Chodron

According to Dzogchen, an undefiled, subtle consciousness that pervades all mental states. It is comparable to the fundamental innate mind of clear light in the New Translation schools.

Excellent qualities can be cultivated limitlessly
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.
Rigpa
Explaining rigpa, continuing the teaching from the section "Afflictive Mental States and the Nature of the Mind", in Chapter 12.
Dormant and manifest consciousnesses
Explaining dormant and manifest aspects of rigpa and subtlest clear light mind, completing the section "Afflictive Mental States and the Nature of the Mind” from Chapter 12