Vairocana Mantra

Just as Amida is
compassion personified,
so too is Vairocana
wisdom personified.
As the Nembutsu is
Amida calling,
the Vairocana Mantra
is Wisdom calling.

Vairocana is a celestial Buddha being the Adi Buddha which represents that wisdom of transcendental reality, the True Reality of Being and Non-Beinng. This reality is non-dual because it is empty of ignorance and because samsara is the root of nirvana.

For it is suffering that motivates us to seek its cure through understanding of the Four Noble Truths and to engage in spiritual activities that result in the spiritual treasures of teaching the Dharma, humility, meditation, giving, and fearlessness to cure spiritual ignorance out of which craving arises, the destruction of anger and hate, eradication of selfishness, neutralizing pride and greed, and pacification of envy.

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Vairocana: http://en.wikipedia.org/wiki/Vairocana
Five Wisdom Buddhas: http://en.wikipedia.org/wiki/Five_Dhyani_Buddhas