Lotus Sutra:

(Sanskrit: Saddharmapundarika sutra, "the Sutra of the Lotus of the True Dharma") One of the earliest and most influential scriptures in the Mahayana, translated six times into Chinese between 255-601 A.D, the Lotus Sutra describes the bodhisattva ideal, and holds that the perfect vehicle to ultimate liberation is the Great Vehicle, the Mahayana.