Now arousing the mind focused on supreme enlightenment will be discussed. As just explained:
When well-accustomed to the four immeasurables,
Meditate on the root of all dharmas, the two bodhicittas.
Bodhicitta is the root of all dharmas of the world and beyond the world.
It is the essence of all paths. It is the guide of all sentient beings. The steed by which one will quickly cross to the unsurpassable mansion of excellence is the best of attitudes, bodhicitta.
Therefore we should learn how to arouse it. The Sutra Requested by Maitreya (byams pa las zhus pa’i mdo) says:
Maitreya, if a bodhisattva has that Dharma, all the lower realms will be abandoned. There will be no coming into the hands of evil associates. It will be the cause of quickly becoming fully, truly, completely enlightened. What is this single Dharma? It is the most excellent and perfect of attitudes, bodhicitta.
Maitreya, if one has that Dharma, the lower realms are abandoned. There will be no coming into the hands of evil associates. It will be the cause of quickly becoming fully, truly, completely enlightened.
The Bodhisattva-Pitaka-Sutra (byang chub sems dpa’i sde snod kyi mdo) says:
Those who wish to become quickly enlightened with unsurpassable, true, complete enlightenment should train in the best of attitudes, bodhicitta.