Buddha Nature quote

“…karuna is "boundless," its inferiority as compared to mahakaruna is related to their difference in essential nature: karuna's nature is essentially nondelusion, whereas that of mahakaruna is essentially nondelusion. The idea, evidently, is that anger may be eliminated while some delusion remains, but if delusion is uprooted, anger has no foundation and cannot arise. The idea of ​​karuna as freedom from anger is consistent with the fourth distinction, in which karuna is associated with the fourth dhyana, which is characterized by freedom from emotion or, in other words, equanimity, and by mindfulness. The sixth distinction adds that karuna also involves freedom from desire. Thus it would seem that freedom from desire and freedom from anger go hand in hand and that the two are expressed positively in equanimity.” (P.130)

Sallie B. King quote

From Buddha Nature p.79.

"Two other "causes and conditions" of the eternity of the trikaya do not seem to speak essentially in terms of soteriological practice and action. These are the fifth, which speaks of nonduality, and the tenth, which is concerned with nontemporality. The nonduality of samsara and nirvana is due to their mutual emptiness. Therefore, eternity is not grounded here in a substantive metaphysical entity but in its contrary, the absence of such an entity, the emptiness of any attribute posited for either. Nondualistic wisdom is able to realize the nondistinction between the two and hence the Buddhas, in a sense, are able to participate simultaneously in both. In this condition, we are told, lies the Buddhas' eternity. Nondualism based on emptiness, then, is the source of eternity here."