There is one contemplation which, when often practiced and much developed, leads to the complete turning away from the world, to detachment, to stilling, to ceasing, to peace, to final penetrating knowledge, to Enlightenment, and thus to Nirvana.
Noble disciples, who by progress have understood the true Dharma, dwell frequently in this state. Which is that one contemplation? It is reflecting over the qualities of the Buddha exactly like this:
Worthy, honorable, and perfectly self-Enlightened is the Buddha.
Consummated in knowledge and behavior, totally transcended,
expert in all dimensions, knower of all worlds,
unsurpassable trainer of those who can be tamed,
both teacher and guide of gods and humans,
blessed, exalted, awakened, and perfectly enlightened is the Buddha.
—Buddha Shakyamuni, Anguttara Nikāya