Just as complete darkness that has prevailed for many years can be eliminated by a single lamp, in the same way, the complete darkness of the afflictive emotions that has prevailed for a hundred eons can be eliminated by a single generation of the power of wisdom.
Just as the moon, the sun, or a large precious jewel can dispel all darkness, in the same way, a single virtuous thought endowed with clarity can dispel all the darkness of unknowing.
—Buddha Shakyamuni, The Great Compassion Sutra
Great Middle Way 