Most modern Buddhist scholars believe that the Lotus Sutra was compiled about 500 years after Sakyamuni’s death – that is, during the first century of our era. (It was not composed all at once. Some parts are considered older than others.) In the light of this historical assessment, we can deduce that the Lotus Sutra constituted an effort to unify the diverse Buddhist schools of thought and practice which had already developed. No matter when the sutra was actually written, however, its doctrine should be understood as conveying universal meaning – the truth which transcends any limits of time or place. The Lotus Sutra embodies thought meant to unify all the Buddhist sects, old and new, regardless of their origin.
Introduction to the Lotus Sutra